Updated on 2024/07/17

写真a

 
MATSUSHIMA,Kyoji
 
Organization
Faculty of Engineering Science Professor
Title
Professor
Contact information
メールアドレス
External link

Degree

  • Doctor of Engineering

  • Master of Engineering

Research Interests

  • Computer Holography

  • Digital Holography

  • Polygon-Based Method

  • Silhouette Method

  • Computer-Generated Hologram

  • Wave Optical Simulation

  • Switch-Back Technique

Research Areas

  • Nanotechnology/Materials / Optical engineering and photon science  / Holographic Fringe Pattern

  • Informatics / High performance computing  / Large-Scale Wave-Optical Simulation

  • Informatics / Perceptual information processing  / Computer Holography

  • Informatics / Entertainment and game informatics  / 3D Display

Education

  • Osaka City University   Graduate School, Division of Engineering   Applied Physics

    - 1990

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  • Osaka City University   Faculty of Engineering

    - 1984

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    Country: Japan

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  • Osaka City University   Faculty of Engineering

    - 1984

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  • Osaka City University   Graduate School, Division of Engineering   Applied Physics

    1990

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    Country: Japan

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Professional Memberships

  • 応用物理学会

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  • The Institute of Electronics, Information and Communication Engineers

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  • Optical Society of America

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  • The International Society for Optical Engineer

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  • The Institute of Image Information and Television Engineers

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  • HODIC研究会

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  • 日本光学会

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Papers

  • High-quality full-parallax full-color three-dimensional image reconstructed by stacking large-scale computer-generated volume holograms Reviewed

    Orie Kunieda, Kyoji Matsushima

    Applied Optics   58 ( 34 )   G104 - G111   2019.10

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1364/AO.58.00G104

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  • Full-color digitized holography for large-scale holographic 3D imaging of physical and nonphysical objects Reviewed

    Kyoji Matsushima, Noriaki Sonobe

    Applied Optics   57 ( 1 )   A150 - A156   2018.1

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:OSA - The Optical Society  

    Digitized holography techniques are used to reconstruct three-dimensional (3D) images of physical objects using large-scale computer-generated holograms (CGHs). The object field is captured at three wavelengths over a wide area at high densities. Synthetic aperture techniques using single sensors are used for image capture in phase-shifting digital holography. The captured object field is incorporated into a virtual 3D scene that includes nonphysical objects, e.g., polygon-meshed CG models. The synthetic object field is optically reconstructed as a large-scale full-color CGH using red-green-blue color filters. The CGH has a wide full-parallax viewing zone and reconstructs a deep 3D scene with natural motion parallax.

    DOI: 10.1364/AO.57.00A150

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  • Rendering of specular curved objects in polygon-based computer holography Reviewed

    Hirohito Nishi, Kyoji Matsushima

    APPLIED OPTICS   56 ( 13 )   F37 - F44   2017.5

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:OPTICAL SOC AMER  

    A realistic rendering technique is presented for creating large-scale computer-generated holograms. The technique is based on the polygon-based method, but allows specular curved surfaces to be reconstructed without increasing the number of polygons. In this technique, specular flat surfaces are transformed into curved surfaces. This is achieved by controlling the direction of reflected light, using fragmentary plane waves. An actual large-scale computer-generated hologram is created, and is used to verify the validity and practicality of the technique. (C) 2017 Optical Society of America

    DOI: 10.1364/AO.56.000F37

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  • Full-color large-scaled computer-generated holograms using RGB color filters Reviewed

    Yasuhiro Tsuchiyama, Kyoji Matsushima

    Optics Express   25 ( 3 )   2016 - 2030   2017.2

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:OSA - The Optical Society  

    A technique using RGB color filters is proposed for creating high-quality full-color computer-generated holograms (CGHs). The fringe of these CGHs is composed of more than a billion pixels. The CGHs reconstruct full-parallax three-dimensional color images with a deep sensation of depth caused by natural motion parallax. The simulation technique as well as the principle and challenges of high-quality full-color reconstruction are presented to address the design of filter properties suitable for large-scaled CGHs. Optical reconstructions of actual fabricated full-color CGHs are demonstrated in order to verify the proposed techniques.

    DOI: 10.1364/OE.25.002016

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  • Silhouette method for hidden surface removal in computer holography and its acceleration using the switch-back technique Reviewed

    Kyoji Matsushima, Masaki Nakamura, Sumio Nakahara

    OPTICS EXPRESS   22 ( 20 )   24450 - 24465   2014.10

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:OPTICAL SOC AMER  

    A powerful technique is presented for occlusion processing in computer holography. The technique offers an improvement on the conventional silhouette method, which is a general wave optics-based occlusion processing method. The proposed technique dramatically reduces the computation time required for computer-generated holograms (CGH) of self-occluded objects. Performance measurements show that a full-parallax high-definition CGH composed of billions of pixels and a small CGH intended to be reconstructed in electro-holography can be computed in only 1.7 h and 4.5 s, respectively, without any hardware acceleration. Optical reconstruction of the high-definition CGH shows natural and continuous motion parallax in the self-occluded object. (C) 2014 Optical Society of America

    DOI: 10.1364/OE.22.024450

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  • Simple wave-field rendering for photorealistic reconstruction in polygon-based high-definition computer holography Reviewed

    Kyoji Matsushima, Hirohito Nishi, Sumio Nakahara

    JOURNAL OF ELECTRONIC IMAGING   21 ( 2 )   2012.4

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:IS&T & SPIE  

    A simple and practical technique is presented for creating fine three-dimensional (3D) images with polygon-based computer-generated holograms. The polygon-based method is a technique for computing the optical wave-field of virtual 3D scenes given by a numerical model. The presented method takes less computation time than common point-source methods and produces fine spatial 3D images of deep 3D scenes that convey a strong sensation of depth, unlike conventional 3D systems providing only binocular disparity. However, smooth surfaces cannot be reconstructed using the presented method because the surfaces are approximated by planar polygons. This problem is resolved by introducing a simple rendering technique that is almost the same as that in common computer graphics, since the polygon-based method has similarity to rendering techniques in computer graphics. Two actual computer holograms are presented to verify and demonstrate the proposed technique. One is a hologram of a live face whose shape is measured using a 3D laser scanner that outputs polygon-mesh data. The other is for a scene including the moon. Both are created employing the proposed rendering techniques of the texture mapping of real photographs and smooth shading. (C) 2012 SPIE and IS&T. [DOI: 10.1117/1.JEI.21.2.023002]

    DOI: 10.1117/1.JEI.21.2.023002

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  • Rendering of specular surfaces in polygon-based computer-generated holograms Reviewed

    Hirohito Nishi, Kyoji Matsushima, Sumio Nakahara

    APPLIED OPTICS   50 ( 34 )   H245 - H252   2011.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:OPTICAL SOC AMER  

    A technique is presented for realistic rendering in polygon-based computer-generated holograms (CGHs). In this technique, the spatial spectrum of the reflected light is modified to imitate specular reflection. The spectral envelopes of the reflected light are fitted to a spectral shape based on the Phong reflection model used in computer graphics. The technique features fast computation of the field of objects, composed of many specular polygons, and is applicable to creating high-definition CGHs with several billions of pixels. An actual high-definition CGH is created using the proposed technique and is demonstrated for verification of the optical reconstruction of specular surfaces. (C) 2011 Optical Society of America

    DOI: 10.1364/AO.50.00H245

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  • Digitized holography: modern holography for 3D imaging of virtual and real objects Reviewed

    Kyoji Matsushima, Yasuaki Arima, Sumio Nakahara

    APPLIED OPTICS   50 ( 34 )   H278 - H284   2011.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:OPTICAL SOC AMER  

    Recent developments in computer algorithms, image sensors, and microfabrication technologies make it possible to digitize the whole process of classical holography. This technique, referred to as digitized holography, allows us to create fine spatial three-dimensional (3D) images composed of virtual and real objects. In the technique, the wave field of real objects is captured in a wide area and at very high resolution using the technique of synthetic aperture digital holography. The captured field is incorporated in virtual 3D scenes including two-dimensional digital images and 3D polygon mesh objects. The synthetic field is optically reconstructed using the technique of computer-generated holograms. The reconstructed 3D images present all depth cues like classical holograms but are digitally editable, archivable, and transmittable unlike classical holograms. The synthetic hologram printed by a laser lithography system has a wide viewing zone in full-parallax and give viewers a strong sensation of depth, which has never been achieved by conventional 3D systems. A real hologram as well as the details of the technique is presented to verify the proposed technique. (C) 2011 Optical Society of America

    DOI: 10.1364/AO.50.00H278

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  • Extremely high-definition full-parallax computer-generated hologram created by the polygon-based method Reviewed

    Kyoji Matsushima, Sumio Nakahara

    APPLIED OPTICS   48 ( 34 )   H54 - H63   2009.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:OPTICAL SOC AMER  

    A large-scale full-parallax computer-generated hologram (CGH) with four billion (2(16) x 2(16)) pixels is created to reconstruct a fine true 3D image of a scene, with occlusions. The polygon-based method numerically generates the object field of a surface object, whose shape is provided by a set of vertex data of polygonal facets, while the silhouette method makes it possible to reconstruct the occluded scene. A novel technique using the segmented frame buffer is presented for handling and propagating large wave fields even in the case where the whole wave field cannot be stored in memory. We demonstrate that the full-parallax CGH, calculated by the proposed method and fabricated by a laser lithography system, reconstructs a fine 3D image accompanied by a strong sensation of depth. (C) 2009 Optical Society of America

    DOI: 10.1364/AO.48.000H54

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  • Formulation of the rotational transformation of wave fields and their application to digital holography Reviewed

    Kyoji Matsushima

    APPLIED OPTICS   47 ( 19 )   D110 - D116   2008.7

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:OPTICAL SOC AMER  

    Rotational transformation based on coordinate rotation in Fourier space is a useful technique for simulating wave field propagation between nonparallel planes. This technique is characterized by fast computation because the transformation only requires executing a fast Fourier transform twice and a single interpolation. It is proved that the formula of the rotational transformation mathematically satisfies the Helmholtz equation. Moreover, to verify the formulation and its usefulness in wave optics, it is also demonstrated that the transformation makes it possible to reconstruct an image on arbitrarily tilted planes from a wave field captured experimentally by using digital holography. (c) 2008 Optical Society of America.

    DOI: 10.1364/AO.47.00D110

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  • Computer-generated holograms for three-dimensional surface objects with shade and texture Reviewed

    K Matsushima

    APPLIED OPTICS   44 ( 22 )   4607 - 4614   2005.8

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    Authorship:Lead author, Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:OPTICAL SOC AMER  

    Digitally synthetic holograms of surface model objects are investigated for reconstructing three-dimensional objects with shade and texture. The objects in the proposed techniques are composed of planar surfaces, and a property function defined for each surface provides shape and texture. The field emitted from each surface is independently calculated by a method based on rotational transformation of the property function by use of a fast Fourier transform (FFT) and totaled on the hologram. This technique has led to a reduction in computational cost: FFT operation is required only once for calculating a surface. In addition, another technique based on a theoretical model of the brightness of the reconstructed surfaces enables us to shade the surface of a reconstructed object as designed. Optical reconstructions of holograms synthesized by the proposed techniques are demonstrated. (c) 2005 Optical Society of America.

    DOI: 10.1364/AO.44.004607

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  • High-quality Color-animated CGH Using a Motor-driven Photomask

    Ryota Koiso, Tatsuya Kobayashi, Keisuke Nonaka, Kyoji Matsushima

    SIGGRAPH Asia 2023 Technical Communications   2023.11

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    Publishing type:Research paper (international conference proceedings)   Publisher:ACM  

    DOI: 10.1145/3610543.3626182

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  • Color Animated Full-parallax High-definition Computer-generated Hologram

    Ryota Koiso, Keisuke Nonaka, Tatsuya Kobayashi, Kyoji Matsushima

    SIGGRAPH Asia 2022 Posters   2022.12

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    Publishing type:Research paper (international conference proceedings)   Publisher:ACM  

    DOI: 10.1145/3550082.3564162

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  • Computer-generated holograms of a life-size human captured from multi-viewpoint cameras

    Shunsuke Igarashi, Kentaro Kakinuma, Tomoya Nakamura, Kensuke Ikeya, Jun Arai, Tomoyuki Mishina, Kyoji Matsushima, Masahiro Yamaguchi

    Proceedings Digital Holography and Three-Dimensional Imaging 2019   2019.5

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Optical Society of America (OSA)  

    We propose a method to overcome difficulty of calculating holograms that reconstruct a life-size human using ray-wavefront conversion and multi-viewpoint cameras. Reconstruction of 3D images was verified through a hologram of 128K x 256K.

    DOI: 10.1364/DH.2019.Tu4A.4

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  • Efficient tiled calculation of over-10-gigapixel holograms using ray-wavefront conversion Reviewed

    Shunsuke Igarashi, Tomoya Nakamura, Kyoji Matsushima, Masahiro Yamaguchi

    Optics Express   26 ( 8 )   10773 - 10786   2018.4

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:OSA - The Optical Society  

    In the calculation of large-scale computer-generated holograms, an approach called “tiling,” which divides the hologram plane into small rectangles, is often employed due to limitations on computational memory. However, the total amount of computational complexity severely increases with the number of divisions. In this paper, we propose an efficient method for calculating tiled large-scale holograms using ray-wavefront conversion. In experiments, the effectiveness of the proposed method was verified by comparing its calculation cost with that using the previous method. Additionally, a hologram of 128K × 128K pixels was calculated and fabricated by a laser-lithography system, and a high-quality 105 mm × 105 mm 3D image including complicated reflection and translucency was optically reconstructed.

    DOI: 10.1364/OE.26.010773

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  • Fast, large-scale hologram calculation in wavelet domain Reviewed

    omoyoshi Shimobaba, Kyoji Matsushima, Takayuki Takahashi, Yuki Nagahama, Satoki Hasegawa, Marie Sano, Ryuji Hirayama, Takashi Kakue, Tomoyoshi Ito

    Optics Communications   412   80 - 84   2018.4

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    DOI: 10.1016/j.optcom.2017.11.066

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    Other Link: https://dblp.uni-trier.de/db/journals/corr/corr1708.html#abs-1708-04233

  • Phase imaging with a coded aperture and super-resolved reconstruction

    Ryoichi Horisaki, Kyoji Matsushima, Jun Tanida

    Optics InfoBase Conference Papers   2018   2018

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:OSA - The Optical Society  

    Phase imaging is a useful tool for visualizing transparent specimens, such as biological cells, without fluorescence labeling. Digital holography and diffractive imaging are established methods for phase imaging although they have a tradeoff between the measurement speed and the observable space-bandwidth product [1, 2]. We have recently reported single-shot and wide FOV phase imaging with coded modulation [3-6]. Here we enhance the throughput of this phase imaging method with a super-resolved reconstruction.

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  • Creating enriched visual experience with holography

    Masahiro Yamaguchi, Shunsuke Igarashi, Tomoya Nakamura, Kyoji Matsushima

    Proceedings of the International Display Workshops   2   811 - 814   2018

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:International Display Workshops  

    This paper introduces the applications of holography that enable unique user experience in visual interface systems, such as a hyper-realistic 3D display by integrating light-field and computational holography, holographic 3D-touch interface, and flat-panel eye-contact camera-display system using a holographic optical element.

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  • Subpixel reconstruction for single-shot phase imaging with coded diffraction Reviewed

    Ryoichi Horisaki, Taichi Kojima, Kyoji Matsushima, Jun Tanida

    APPLIED OPTICS   56 ( 27 )   7642 - 7647   2017.9

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:OPTICAL SOC AMER  

    We present an algorithm for reconstructing an object complex field with resolution below that of an image sensor (subpixel resolution) in single-shot diffractive imaging with coded diffraction. The algorithm employs subpixel phase retrieval and sparse regularization based on compressive sensing. This is useful for high-speed or high-sensitivity imaging using an image sensor with a low pixel count and/or a large pixel size. We experimentally demonstrated the proposed method with two types of moving objects. (C) 2017 Optical Society of America

    DOI: 10.1364/AO.56.007642

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  • Full-color high-definition CGH reconstructing hybrid scenes of physical and virtual objects Reviewed

    Yasuhiro Tsuchiyama, Kyoji Matsushima, Sumio Nakahara, Masahiro Yamaguchi, Yuji Sakamoto

    PRACTICAL HOLOGRAPHY XXXI: MATERIALS AND APPLICATIONS   10127   2017

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:SPIE-INT SOC OPTICAL ENGINEERING  

    High-definition CGHs can reconstruct high-quality 3D images that are comparable to that in conventional optical holography. However, it was difficult to exhibit full-color images reconstructed by these high-definition CGHs, because three CGHs for RGB colors and a bulky image combiner were needed to produce full-color images. Recently, we reported a novel technique for full-color reconstruction using RGB color filters, which are similar to that used for liquid-crystal panels. This technique allows us to produce full-color high-definition CGHs composed of a single plate and place them on exhibition. By using the technique, we demonstrate full-color CGHs that reconstruct hybrid scenes comprised of real-existing physical objects and CG-modeled virtual objects in this paper. Here, the wave field of the physical object are obtained from dense multi-viewpoint images by employing the ray-sampling (RS) plane technique. In addition to the technique for full-color capturing and reconstruction of real object fields, the principle and simulation technique for full-color CGHs using RGB color filters are presented.

    DOI: 10.1117/12.2251414

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  • Full-color large-scaled computer-generated holograms for physical and non-physical objects Reviewed

    Kyoji Matsushima, Yasuhiro Tsuchiyama, Noriaki Sonobe, Shoya Masuji, Masahiro Yamaguchi, Yuji Sakamoto

    HOLOGRAPHY: ADVANCES AND MODERN TRENDS V   10233   2017

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:SPIE-INT SOC OPTICAL ENGINEERING  

    Several full-color high-definition CGHs are created for reconstructing 3D scenes including real-existing physical objects. The field of the physical objects are generated or captured by employing three techniques; 3D scanner, synthetic aperture digital holography, and multi-viewpoint images. Full-color reconstruction of high-definition CGHs is realized by RGB color filters. The optical reconstructions are presented for verifying these techniques.

    DOI: 10.1117/12.2265798

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  • Efficient Calculation Method for Realistic Deep 3D Scene Hologram using Orthographic Projection Reviewed

    Shunsuke Igarashi, Tomoya Nakamura, Kyoji Matsushima, Masahiro Yamaguchi

    PRACTICAL HOLOGRAPHY XXX: MATERIALS AND APPLICATIONS   9771   2016

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:SPIE-INT SOC OPTICAL ENGINEERING  

    We propose a fast calculation method to synthesize a computer-generated hologram (CGH) of realistic deep threedimensional (3D) scene. In our previous study, we have proposed a calculation method of CGH for reproducing such scene called ray-sampling-plane (RSP) method, in which light-ray information of a scene is converted to wavefront, and the wavefront is numerically propagated based on diffraction theory. In this paper, we introduce orthographic projection to the RSP method for accelerating calculation time. By numerical experiments, we verified the accelerated calculation with the ratio of 28-times compared to the conventional RSP method. The calculated CGH was fabricated by the printing system using laser lithography and demonstrated deep 3D image reconstruction in 52mmx52mm with realistic appearance effect such as gloss and translucent effect.

    DOI: 10.1117/12.2212301

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  • Frequency filtering for reduction of memory usage in computer holography

    Kyoji Matsushima, Sumio Nakahara

    Digital Holography and Three-Dimensional Imaging, DH 2015   410   2015.5

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Optical Society of America (OSA)  

    A novel technique using frequency filtering is presented for cutting down memory usage required for creating high-definition computer-generated holograms. The memory usage is reduced to one-fourth of what it was before by this technique.

    DOI: 10.1364/dh.2015.dm4a.6

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  • Digital signal processing of light in holographic 3D imaging Reviewed

    Kyoji Matsushima

    APPLICATIONS OF DIGITAL IMAGE PROCESSING XXXVIII   9599   2015

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:SPIE-INT SOC OPTICAL ENGINEERING  

    Several techniques are introduced and reviewed in high-definition computer holography. The reconstructed object is usually CG-modeled virtual objects, but it is possible to digitally record light of physical objects and reconstruct it by the high-definition computer-generated hologram. The process can be considered as a sort of digital signal processing of light.

    DOI: 10.1117/12.2188046

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  • Optimization of design-wavelength for unobtrusive chromatic aberration in high-definition color computer holography Reviewed

    Takashi Miyaoka, Kyoji Matsushima, Sumio Nakahara

    Proceedings of SPIE - The International Society for Optical Engineering   9386   2015

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    We propose a technique for optimization of design-wavelengths in trichromatic computer holography. Full color reconstruction of high-definition computer-generated holograms (CGH) is simply realized by combining three primary color images reconstructed by three CGHs. However, chromatic aberrations occur in the reconstruction, because incoherent light sources such as LED are commonly used for the illumination. Since these chromatic aberrations change dependently on the design-wavelengths of CGHs as well as the shape of illumination spectra, optimization techniques based on simulated reconstruction of CGHs is presented to obtain the most unobtrusive color aberration from spectra specific to the light source.

    DOI: 10.1117/12.2076876

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  • Computer holography as an application of computational optics Reviewed

    Kyoji Matsushima, Sumio Nakahara

    OPTICAL SYSTEMS DESIGN 2015: COMPUTATIONAL OPTICS   9630   2015

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:SPIE-INT SOC OPTICAL ENGINEERING  

    Several techniques are reviewed in high-definition computer holography. These techniques are based on numerical techniques in wave optics. For example, the polygon-based method based on propagation between tilted planes is used for calculating the field of polygonal surface sources of light. Numerical propagation of large-scaled field is also implemented by using the technique of off-axis propagation. The silhouette method for occlusion processing is based on the angular spectrum method for propagation between parallel planes. The relation between computer holography and computational optics are presented and several high-definition CGHs using these techniques are demonstrated for verifying the techniques.

    DOI: 10.1117/12.2197470

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  • Optimization of the switch-back technique used for fast occlusion-processing in computer holography Reviewed

    Sachio Masuda, Kyoji Matsushima, Sumio Nakahara

    PRACTICAL HOLOGRAPHY XXIX: MATERIALS AND APPLICATIONS   9386   2015

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:SPIE-INT SOC OPTICAL ENGINEERING  

    A method called the switch-back technique allows us to drastically reduce computation time of occlusionprocessing based on the polygon-by-polygon silhouette light-shielding. It is also reported that further reduction of computation time can be achieved by splitting an object to some sub-models along with depth direction. However, computational cost for numerical propagation between the sub-models increases with increasing the number of sub-models. As a result, there is an optimum number of sub-models. In this paper, we propose a technique to predict the optimum number of sub-models by estimating the total computational complexity of the switch-back technique with object splitting.

    DOI: 10.1117/12.2075998

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  • Switch-back method: A fast technique for hidden-sburface removal in computer holography Reviewed

    Kyoji Matsushima, Sumio Nakahara

    2014 13TH WORKSHOP ON INFORMATION OPTICS (WIO)   2014

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:IEEE  

    In this paper, a new technique for occlusion processing is proposed in computer holography. The new technique based on the silhouette method is very fast as compared with the conventional methods. This technique allows us to remove hidden-surfaces of self-occlude objects and makes it possible to reconstruct fine spatial 3D images that are comparable to that in classical holography. The performance and optical reconstruction is reported.

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  • Techniques for Applying Rigorous Light-Shielding to High-Definition Computer Holography Reviewed

    Sachio Masuda, Kyoji Matsushima, Sumio Nakahara

    PRACTICAL HOLOGRAPHY XXVIII: MATERIALS AND APPLICATIONS   9006   2014

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:SPIE-INT SOC OPTICAL ENGINEERING  

    High-definition computer holography based on the polygon-based method commonly uses the silhouette method to shield light behind objects for hidden surface removal. However, the light-shielding is not perfect and causes leakage light passing through many gaps between silhouette-shaped masks. Although we have proposed the principle of more rigorous technique to remove the leakage light, the technique has never been applied to the actual high-definition computer holography because of its long computation time. We propose some techniques to reduce the computation time and apply the rigorous technique to high-definition computer holography. A CGH created by the proposed method is demonstrated.

    DOI: 10.1117/12.2039216

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  • A wavefront printer using phase-only spatial light modulator for producing computer-generated volume holograms Reviewed

    Wataru Nishii, Kyoji Matsushima

    PRACTICAL HOLOGRAPHY XXVIII: MATERIALS AND APPLICATIONS   9006   2014

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:SPIE-INT SOC OPTICAL ENGINEERING  

    The wavefront printer is an equipment to produce computer-generated holograms (CGH) as a volume hologram. This printer records the wavefront generated by spatial light modulator (SLM). We propose a novel technique for applying phase-only SLM to the wavefront printer without losing the advantage of the wide space-band product of phase modulation. The phase-only SLM commonly has the problem of degradation of generated wavefronts because of coding noise due to phase only modulation. To reduce the noise, a technique is presented in order to partially modulate amplitude of recording light in phase-only SLM.

    DOI: 10.1117/12.2039174

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  • Performance of the switch-back technique for fast hidden- surface removal in computer holography

    Kyoji Matsushima, Sachio Masuda, Sumio Nakahara

    Optics InfoBase Conference Papers   2014

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Optical Society of America (OSA)  

    A novel technique for hidden-surface removal, called switch-back technique, is proposed for fast generation of full-parallax CGHs. The basic theory based on Bibinet's law as well as the performances are presented with the reconstruction of CGHs. © 2014 OSA.

    DOI: 10.1364/dh.2014.dtu2b.7

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  • Time-Division Holographic Display by Switching Light Source Reviewed

    MATSUDA Atsushi, MATSUSHIMA Kyoji

    The IEICE transactions on information and systems (Japanese edetion)   Vol.J96-D No.3 pp.381-388 ( 3 )   381 - 388   2013.3

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    Language:Japanese   Publisher:The Institute of Electronics, Information and Communication Engineers  

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  • Fabrication of Computer Generated Hologram with Sub-micrometer Fringe Pattern Using Laser Direct Write Lithography System

    Nakahara Sumio, Matsushima Kyoji

    Proceedings of JSPE Semestrial Meeting   2013   291 - 292   2013

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    Language:Japanese   Publisher:The Japan Society for Precision Engineering  

    DOI: 10.11522/pscjspe.2013A.0.291.0

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  • Computer holography: 3D digital art based on high-definition CGH Reviewed

    K. Matsushima, S. Nakahara, Y. Arima, H. Nishi, H. Yamashita, Y. Yoshizaki, K. Ogawa

    9TH INTERNATIONAL SYMPOSIUM ON DISPLAY HOLOGRAPHY (ISDH 2012)   415   2013

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    Our recent works of high-definition computer-generated holograms (CGH) and the techniques used for the creation, such as the polygon-based method, silhouette method and digitized holography, are summarized and reviewed in this paper. The concept of computer holography is proposed in terms of integrating and crystalizing the techniques into novel digital art.

    DOI: 10.1088/1742-6596/415/1/012053

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  • Scaled angular spectrum method Reviewed

    Tomoyoshi Shimobaba, Kyoji Matsushima, Takashi Kakue, Nobuyuki Masuda, Tomoyoshi Ito

    Optics Letters   37 ( 19 )   4128 - 4130   2012.10

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    The angular spectrum method (ASM) calculates diffraction calculation in a high numerical aperture, unlike Fresnel diffraction. However, this method does not allow us to calculate at different sampling rates on source and destination planes. In this Letter, we propose a scaled ASM that calculates diffraction at different sampling rates on source and destination planes using the nonuniform fast Fourier transform. © 2012 Optical Society of America.

    DOI: 10.1364/OL.37.004128

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  • Creation of Extremely High-Definition Computer Holograms Over Several Giga-Pixels Using Polygon-Based Method Invited Reviewed

    MATSUSHIMA Kyoji, NAKAHARA Sumio

    Vol.40, No.1, pp.18-27 ( 1 )   18 - 27   2012.1

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  • Hidden-surface removal based on Babinet's principle and partial wave field propagation in high-resolution computer-generated holograms Reviewed

    Masaki Nakamura, Kyoji Matsushima, Sumio Nakahara

    Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers   66 ( 5 )   J136 - J143   2012

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    A novel method for hidden-surface removal is proposed for accelerating computation of full-parallax computergenerated holograms (CGHs). When creating high-definition CGHs, the silhouette method is probably the only realistic technique to produce occluded 3D scenes. However, the conventional silhouette method is inefficient and more time-consuming for calculating sparse 3D scenes that include many small objects. Although derived from the silhouette method, the proposed method considerably reduces the computation time for sparse scenes by using Babinet's principle and partial wave field propagation. A definite algorithm as well as formulation is presented in this paper. Furthermore, high-definition CGHs created by the proposed method are demonstrated for verifying the validity of the method.

    DOI: 10.3169/itej.66.J136

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  • Advanced rendering techniques for producing specular smooth surfaces in polygon-based high-definition computer holography Reviewed

    Hirohito Nishi, Kyoji Matsushima, Sumio Nakahara

    PRACTICAL HOLOGRAPHY XXVI: MATERIALS AND APPLICATIONS   8281   2012

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    Novel techniques is proposed for rendering specular smooth surfaces in polygon-based computer holography that features reconstruction of fine 3D images accompanied with strong sensation of depth. The technique is an improvement of the conventional technique for rendering flat specular surfaces. In this technique, phase distribution that works as a diffuser is divided into small rectangular segments and the reflection direction is controlled for each segment. In addition, this new method increases freedom for lighting the object. Two high-definition CGHs are calculated by the proposed method. One of them is fabricated and demonstrated for verifying the technique.

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  • Image-type high-definition CGHs encoded by optimized error diffusion Reviewed

    Hiroshi Yamashita, Kyoji Matsushima, Sumio Nakahara

    PRACTICAL HOLOGRAPHY XXVI: MATERIALS AND APPLICATIONS   8281   2012

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    Image-type binary CGHs, fabricated by a laser lithography system, commonly lost the object shading and texture. This is caused by the binary amplitude fringe that is unable to reconstruct object brightness because amplitude information of the object field is removed by binarization if the object is too close to the hologram. In this paper, optimized error diffusion is applied to encoding binary-amplitude image-type CGHs in order to improve reconstruction of surface shading and texture. An actual image-type high-definition CGHs is created by the proposed technique and demonstrated to verify that the CGHs can be reconstructed by white light source without much chromatic aberration.

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  • Numerical image formation by Lens for Wave-optical simulation of reconstruction of full parallax computer-generated hologram Reviewed

    Kazuya Murakami, Kyoji Matsushin

    Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers   65 ( 12 )   1793 - 1800   2011.12

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    A novel method is proposed to provide exact prediction of the optical reconstruction of full-parallax computer generated holograms (CGHs). The wave field emitted from the CGH is numerically propagated into a pupil, and then the image formation by a lens is simulated by a procedure based on wave optics. Two numerical techniques for free space propagation, the shifted-Presnel diffraction and rotational transformation, are used for the numerical calculation. Our method thus enables the viewpoint to be moved and the gaze point to be changed. This technique allows us to confirm the effect of non-diffraction light and the conjugate image of full-parallax large-scaled CGHs prior to their fabrication.

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  • Speedup and scale-up of creation of polygon-based high-definition CGH by using parallel distributed processing

    OGAWA Kohei, HIGASHI Kentaro, MATSUSHIMA Kyoji, NAKAHARA Sumio

    ITE Technical Report   35   9 - 12   2011

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    Polygon-based methods accelerate computation of high-definition computer-generated holograms (CGH). However, the computation time is still very long in the cases where the object model has severe self-occlusion, because processing of hidden surface is necessary for computing the object field. In this report, a novel technique using distributed processing is proposed to speed up and scale-up the computation of high-definition CGHs of self-occluded objects employing the polygon-based method and the silhouette method.

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  • New techniques for wave-field rendering of polygon-based high-definition CGHs New techniques for wave-field rendering of polygon-based high-definition CGHs Reviewed

    Hirohito Nishi, Kentaro Higashi, Yasuaki Arima, Kyoji Matsushima, Sumio Nakahara

    PRACTICAL HOLOGRAPHY XXV: MATERIALS AND APPLICATIONS   7957   2011

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    Four novel techniques are introduced into polygon-based high-definition CGHs (PBHD-CGH) that feature the true-fine spatial 3D image accompanied with a strong sensation of depth. The first is algorithm for creating specular surfaces based on Phong reflection model. This is very useful for providing a feel of material to polygonal surfaces. The second technique is called digitized holography that replaces the entire processes of classical holography by their digital counterparts. The wave-field of real-existent objects can be optically reconstructed by the digitized holography. This technique makes it possible to edit the 3D scene of holograms or create mixed 3D scene of the real and virtual objects. Another technique for creating PBHD-CGH of real-existent objects is also proposed by a CG-like method using a 3D laser scanner that measures the 3D shape of the object. Finally, a prototype PBHD-CGH is demonstrated for creating landscape scenery. This CGH is intended to reconstruct a scene as if the viewers see mountain scenery through the window given by the CGH.

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  • Digitized Holography: Spatial 3D Imaging of Virtual and Real Objects Reviewed

    Kyoji Matsushima, Yasuaki Arima, Sumio Nakahara

    THREE-DIMENSIONAL IMAGING, VISUALIZATION, AND DISPLAY 2011   8043   2011

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    Recent development of computer algorithms and micro fabrication technologies allows us to reconstruct the wave-field of light emitted from a completely virtual 3D scene given by the numerical model. In addition, recent evolution of image sensors and a technique for capturing real object waves makes it possible to digitize the whole process of classical holography. The wave-field of the virtual, real, and hybrid scene are optically reconstructed by the computer holograms fabricated by laser lithography system. The produced spatial 3D images have a wide viewing-zone in full-parallax and give viewers a strong sensation of depth, which never has been caused by conventional 3D systems.

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  • SMOOTH SHADING OF SPECULAR SURFACES IN POLYGON-BASED HIGH-DEFINITION CGH Reviewed

    Hirohito Nishi, Kyoji Matsushima, Sumio Nakahara

    2011 3DTV CONFERENCE: THE TRUE VISION - CAPTURE, TRANSMISSION AND DISPLAY OF 3D VIDEO (3DTV-CON)   2011

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    High-definition computer-generated holograms (CGH) created by the polygon-based method feature reconstruction of very fine 3D image accompanied with strong sensation of depth. However, rendering technique for specular surfaces has not been established. We propose a novel technique for smooth shading of specular surfaces in the polygon-based method. This technique divides the surface function of polygons into some segments and controls the spectral envelopes.

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  • Smooth shading of specular surfaces rendered by the polygon-based method

    NISHI Hirohito, MATSUSHIMA Kyoji, NAKAHARA Sumio

    ITE Technical Report   35   77 - 80   2011

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    High-definition computer-generated holograms (CGH) created by the polygon-based method feature reconstruction of very fine 3D image accompanied with strong sensation of depth. But rendering technique for smooth shading of specular surfaces has not been established. In this paper, a new rendering method is proposed for smooth shading of specular surfaces in the polygon-based CGH. Surface functions are divided into rectangular segments and the spectral envelopes are modified so as to produce metal-like specular reflection.

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  • SPATIAL 3D IMAGING BY SYNTHETIC AND DIGITIZED HOLOGRAPHY Reviewed

    Yasuaki Arima, Kyoji Matsushima, Sumio Nakahara

    2011 3DTV CONFERENCE: THE TRUE VISION - CAPTURE, TRANSMISSION AND DISPLAY OF 3D VIDEO (3DTV-CON)   2011

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    A novel method named digitized holography is proposed for 3D display systems. This is the technique replacing the whole process of classical holography with digital processing of optical wave-fields. The digitized holography allows us to edit holograms and reconstruct spatial 3D images including real-existent objects and CG-modeled virtual objects.

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  • A basic research for rendering of transparent objects in polygon-based computer-generated hologram

    NISHI Hirohito, MATSUSHIMA Kyoji, NAKAHARA Sumio

    ITE Technical Report   35   27 - 30   2011

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    A novel rendering technique is attempted for reconstructing transparent objects in polygon-based method. In this technique, refraction of light is treated by a method based on wave-optics. The transparent objects are approximated to a half-cutting model and their refractive light is obtained by the proposed method polygon by polygon. A CGH is calculated by the proposed technique and its simulated reconstruction is demonstrated.

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  • A Time-Division Electro-Holography with Enhanced Viewing-Angle by Switching LD Source

    MATSUDA Atsushi, TERAGUCH Isao, MATSUSHIMA Kyoji

    ITE Technical Report   35   23 - 26   2011

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    A novel technique is proposed for expanding the horizontal viewing-angle by employing time-division method in electro-holography. In this technique, electrically switched multiple laser diodes (LD) produce multiple hologram images without any complex optics and moving parts. In the prototype system, the horizontal viewing-angle of the hologram reconstructed by a single SLM is expanded four times with 4 LD sources. It is verified that the optically reconstruction of a CGH movie, calculated by the polygon-based method, is clearly viewed with two naked eyes.

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  • High-Definition Image CGH Created by Polygon-Based Method and its Reconstruction by White Light

    YAMASHITA Hiroshi, MATSUSHIMA Kyoji, NAKAHARA Sumio

    ITE Technical Report   35   13 - 16   2011

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    Image-type binary CGHs commonly lost the surface shading and texture-mapping in the optical reconstruction. This is caused by the binary amplitude fringe that is unable to reconstruct object brightness because amplitude information of the object field is removed by binarization if the object is close to the hologram. In this paper, an optimized error diffusion technique is proposed to improve shading and texture-mapping. Image-type high-definition CGHs created by the proposed technique can be reconstructed by white light.

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  • Shifted angular spectrum method for off-axis numerical propagation Reviewed

    Kyoji Matsushima

    OPTICS EXPRESS   18 ( 17 )   18453 - 18463   2010.8

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    A novel method is proposed for simulating free-space propagation from an input source field to a destination sampling window laterally shifted from that in the source field. This off-axis type numerical propagation is realized using the shifted-Fresnel method (Shift-FR) and is very useful for calculating non-paraxial and large-scale fields. However, the Shift-FR is prone to a serious problem, in that it causes strong aliasing errors in short distance propagation. The proposed method, based on the angular spectrum method, resolves this problem. Numerical examples as well as the formulation are presented. (C) 2010 Optical Society of America

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  • Creation of a high-definition CGH reconstructing mountain scenery

    HIGASHI Kentaro, NISHI Hirohito, MATSUSHIMA Kyoji, NAKAHARA Sumio

    ITE Technical Report   34   9 - 12   2010

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    High-definition CGH, created by the polygon-based method, features the reconstruction of spatial 3D images accompanied with a strong sensation of depth because of light-shielding by the Silhouette method. However, hidden-surface removal by the Silhouette method is not easy in self-occluded and uninterrupted large objects such as landscapes like a miniature garden. In this study, a CGH that reconstructs the mountains scenery is created by splitting the mesh data of the scenery generated by Terragen that is a software for generating the 3D scene of a landscape.

    DOI: 10.11485/itetr.34.36.0_9

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  • Computer-generated holograms of real objects captured by using synthetic-aperture digital holography

    ARIMA Yasuaki, MATSUSHIMA Kyoji, NAKAHARA Sumio

    ITE Technical Report   34   5 - 8   2010

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    The wave field of real objects can be recorded by using digital holography. However, the resolution of common image sensors is too low to reconstruct the captured object field by high-definition CGHs, because both the pixel pitch and the number of pixels are insufficient for optical reconstruction by such high quality CGHs. Therefore, the technique of phase-shifting lensless synthetic-aperture digital holography is used for capturing the object field. The captured field is binary-encoded after the numerical interference and then reconstructed as the amplitude hologram in high resolution.

    DOI: 10.11485/itetr.34.36.0_5

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  • Spatial Imaging Based on Extremely High -Definition Computational Holography - Wave -Field Oriented 3D imaging - Reviewed

    Kyoji Matsushima

    IDW'10: PROCEEDINGS OF THE 17TH INTERNATIONAL DISPLAY WORKSHOPS, VOLS 1-3   1237 - 1240   2010

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    Extremely high-definition displays beyond Super Hi-Vision give us a new horizon in the field of 3D imaging. This paper introduces spatial 3D imaging brought by computational holography and techniques for numerical propagation of wave-fields that make it possible to create the spatial 3D images.

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  • High-definition full-parallax CGHs created by using the polygon-based method and the shifted angular spectrum method Reviewed

    Kyoji Matsushima, Sumio Nakahara

    PRACTICAL HOLOGRAPHY XXIV: MATERIALS AND APPLICATIONS   7619   2010

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    A large-scale CGH named "The Venus", created by using the polygon-based method, was demonstrated in the last year. However, the 3D scene of the Venus is restricted by the shifted Fresnel method used for numerical propagation using segmented frame buffers, because severe aliasing errors are produced if the propagation distance is shorter than a specific value in the method. In this paper, a novel method referred to as the shifted angular spectrum method is proposed for short distance propagation using the segmented frame buffers. The method can remove the restriction and give flexibility to design of 3D scenes. Both CGHs calculated by old and new methods are demonstrated.

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  • Impact of Spatial 3D Imaging by Extremely High-Definition Computational Holography -Wave-Field Oriented 3D imaging- Reviewed

    Kyoji Matsushima, Hirohito Nishi, Yasuaki Arima, Kentaro Higashi, Masaki Nakamura, Sumio Nakahara

    IDW'10: PROCEEDINGS OF THE 17TH INTERNATIONAL DISPLAY WORKSHOPS, VOLS 1-3   1333 - 1334   2010

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    Spatial 3D images created by high-definition computational holography are actually demonstrated. The demonstrated 3D images are static images at this stage. However, these presage the great future of 3D displays beyond the Super Hi-Vision because of its strong sensation of depth, which never has been caused by conventional 3D systems.

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  • Band-Limited Angular Spectrum Method for Numerical Simulation of Free-Space Propagation in Far and Near Fields Reviewed

    Kyoji Matsushima, Tomoyoshi Shimobaba

    OPTICS EXPRESS   17 ( 22 )   19662 - 19673   2009.10

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    A novel method is proposed for simulating free-space propagation. This method is an improvement of the angular spectrum method (AS). The AS does not include any approximation of the propagation distance, because the formula thereof is derived directly from the Rayleigh-Sommerfeld equation. However, the AS is not an all-round method, because it produces severe numerical errors due to a sampling problem of the transfer function even in Fresnel regions. The proposed method resolves this problem by limiting the bandwidth of the propagation field and also expands the region in which exact fields can be calculated by the AS. A discussion on the validity of limiting the bandwidth is also presented. (C) 2009 Optical Society of America

    DOI: 10.1364/OE.17.019662

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  • A Full-Parallax Computer-Generated Hologram Produced by Using the Polygon Method for Shaping the Object and the Silhouette Method for Hidden-Surface Removal

    MATSUSHIMA Kyoji, NAKAHARA Sumio

    ITE Technical Report   33   27 - 29   2009

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    In the last decades, point-based methods are used for computing the object wave of 3D objects. However, the computation is much time-consuming for shaping surface objects, and furthermore, there is no practical algorithm for light-shielding to reconstruct occluded scenes in full-parallax CGHs. We report a CGH that is calculated by the polygon-based method for forming 3D surface objects and the silhouette method for light-shielding to reconstruct occluded scenes. This CGH, fabricated by using a laser lithography technology, reconstructs the true fine 3D image accompanied by a strong sensation of depth.

    DOI: 10.11485/itetr.33.24.0_27

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  • Region segmentation and parallel processing for creating large-scale CGHs in polygon source method Reviewed

    Kyoji Matsushima, Sumio Nakahara

    PRACTICAL HOLOGRAPHY XXIII: MATERIALS AND APPLICATIONS   7233   2009

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    A novel technique is presented for calculating large-scale CGHs by using polygon-based method. In the technique, wave fields are regionally segmented and propagated by using the shifted Fresnel method. As a result, large CGHs can be calculated even in the case that the whole frame buffer can not be stored in main memory. The produced full-parallax CGH has the size of four billion pixels and reconstructs the fine image of a smooth surface object accompanied with a strong depth sensation.

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  • Hidden-Surface Removal Based on Babinet's Principle and Partial Wave Field Propagation in Full Parallax Computer-Generated Holograms

    NAKAMURA Masaki, MATSUSHIMA Kyoji, NAKAHARA Sumio

    ITE Technical Report   33   1 - 4   2009

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    A novel method for hidden surface removal is proposed in full parallax CGHs. This method is an improvement of the conventional silhouette method and calculates the object field faster than the conventional method in cases of creation of large-scale CGHs. The conventional method requires the same number of operations of total field propagation with the number of objects, whereas this method shields light based on the Babinet's principle and partial field propagation and does not use total field propagation at all. Therefore, in creation of large-scale CGHs that needs segmented frame buffers, the proposed method calculates the object field of occluded scenes much faster than the conventional method.

    DOI: 10.11485/itetr.33.35.0_1

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  • Full Wave-Optical Simulation of Reconstruction of Full Parallax Computer-Generated Holograms : Simulation of the Effect of Illuminated Wave Fronts on Reconstruction

    MURAKAMI Kazuya, MATSUSHIMA Kyoji

    ITE Technical Report   33   5 - 8   2009

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    Techniques for numerical simulation of CGH-reconstruction have been reported in some literatures. However, the reported image is not the retinal image formed by lens of human eyes, and it is not presented to confirm the influence of non-diffraction light and the conjugate image. Recently, we proposed a novel technique for simulated reconstruction. This new method simulates the retinal image of reconstruction of CGHs by using methods of the shifted Fresnel diffraction and rotational transformation. We report the influence in reconstruction in cases that the illumination wave used in reconstruction is different from the reference wave used in CGH calculation.

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  • Free-viewpoint images captured using phase-shifting synthetic aperture digital holography Reviewed

    Tatsuya Nakatsuji, Kyoji Matsushima

    APPLIED OPTICS   47 ( 19 )   D136 - D143   2008.7

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    Free-viewpoint images obtained from phase-shifting synthetic aperture digital holography are given for scenes that include multiple objects and a concave object. The synthetic aperture technique is used to enlarge the effective sensor size and to make it possible to widen the range of changing perspective in the numerical reconstruction. The lensless Fourier setup and its aliasing-free zone are used to avoid aliasing errors arising at the sensor edge and to overcome a common problem in digital holography, namely, a narrow field of view. A change of viewpoint is realized by a double numerical propagation and by clipping the wave field by a given pupil. The computational complexity for calculating an image in the given perspective from the base complex-valued image is estimated at a double fast Fourier transform. The experimental results illustrate the natural change of appearance in cases of both multiple objects and a concave object. (c) 2008 Optical Society of America.

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  • Hidden surface removal in full-parallax CGHs by silhouette approximation Reviewed

    Akinobu Kondoh, Kyoji Matsushima

    Systems and Computers in Japan   38 ( 6 )   53 - 61   2007.6

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    In this paper we report a method of removing hidden surfaces in full-parallax computer-generated holograms. First, we examine the handling of light shielding by tilted patches in terms of wave optics, and then propose a silhouette approximation. In addition, we derive a recurrence formula to synthesize object light waves with hidden surface removal by the proposed method. We show that appearance of optically reconstructed surface object of the full-parallax holograms generated by the proposed method varies in a natural manner as the observation point is changed. This study achieves hidden surface removal in full-parallax holograms, which was believed to be possible only if vertical parallax is ignored. © 2007 Wiley Periodicals, Inc.

    DOI: 10.1002/scj.20345

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  • A diffractive optical element designed for arbitrary pattern beam shaping by use of iterative optimization algorith Invited Reviewed

    MATSUSHIMA Kyoji, Takashi Morimura

    The Review of Laser Engineering   Vol.35, pp299-308 ( 5 )   299 - 308   2007.5

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  • Phase-encoding of computer-generated holograms by adaptive error-diffusion algorithm using the simultaneous perturbation algorithm Reviewed

    Daiki Matsuo, Kyoji Matsushima

    Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers   60 ( 4 )   561 - 568   2006.4

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    In binary phase encoding of computer-generated holograms (CGHs), quantization usually decreases the quality of the reconstructed image. For reducing the quantization and coding noises, we developed an adaptive error-diffusion method by using the simultaneous perturbation algorithm in which the diffusion coefficients are adapted for the size and layout of the object. Furthermore, binary phase-encoded CGHs were fabricated by using a mask-transferring process. Its optical reconstructions and numerical reconstructions in a Fourier setup were demonstrated.

    DOI: 10.3169/itej.60.561

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  • A new high-resolution printer for digitally synthetic holograms Reviewed

    Shunsuke Yamanaka, Kyoji Matsushima

    Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers   58 ( 11 )   1665 - 1668   2004

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    Our fringe printer for printing digitally synthetic holograms, which we reported in a previous article, was improved to increase its stability and resolution. The old model was capable of printing elliptical dots in a diameter of 2×4 μm by focusing the beam of a laser diode onto a hologram dry plate. However, active control to focus the laser beam was not taken into account in the design, and therefore, the resolution and the stability were limited. The new fringe printer has had mechanisms incorporated to detect surface undulations in the recording materials and control the beam waist only on the surface. These improvements made it possible to reduce the dot size to 1.5×3 μm and to keep the dots size within a large area.

    DOI: 10.3169/itej.58.1665

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  • Hidden Surface Removal in Full-Parallax CGHs by Using the Silhouette Approximation Reviewed

    Akinobu KONDOH, MATSUSHIMA Kyoji

    J87-D-II, pp.1487-1494   1487 - 1494   2004

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    Kansai University Research Grants

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  • Fast calculation method for optical diffraction on tilted planes by use of the angular spectrum of plane waves Reviewed

    K Matsushima, H Schimmel, F Wyrowski

    JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION   20 ( 9 )   1755 - 1762   2003.9

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    A novel method for simulating field propagation is presented. The method, based on the angular spectrum of plane waves and coordinate rotation in the Fourier domain, removes geometric limitations posed by conventional propagation calculation and enables us to calculate complex amplitudes of diffracted waves on a plane not parallel to the aperture. This method can be implemented by using the fast Fourier transformation twice and a spectrum interpolation. It features computation time that is comparable with that of standard calculation methods for diffraction or propagation between parallel planes. To demonstrate the method, numerical results as well as a general formulation are reported for a single-axis rotation. (C) 2003 Optical Society of America.

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  • Propagation of electromagnetic fields between non-parallel planes Reviewed

    K Matsushima, H Schimmel, S Buehling, F Wyrowski

    WAVE-OPTICAL SYSTEMS ENGINEERING II   5182   55 - 62   2003

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    Optical systems can be understood as a sequence of homogeneous and inhomogeneous regions (free spaces and optical elements). In wave-optical engineering these regions are often analyzed separately using different physical approximations. The propagation of a wave within a homogeneous medium is well understood and described by different propagation integrals (for example by the angular spectrum of plane waves propagation, the Rayleigh Sommerfeld propagation and paraxial approximations following from these integrals). To allow a fast numerical evaluation of these integrals, typically Fast Fourier Transforms are used. If the propagation integrals are evaluated using Fast Fourier Transforms it follows automatically that start and end plane of the propagation have to be perpendicular to the optical axis. This can be a disadvantage if the complex amplitude of a propagating wave has to be calculated on a plane non-parallel to the start plane of the propagation. Examples are the propagation of a wave to a screen which is tilted to the optical axis, the calculation of reflection of a wave on a tilted mirror and changing of the main propagation direction of a wave after a prism.
    The authors will demonstrate a modified propagation integral based on the angular spectrum of plane wave propagation that overcomes this limitation and allows a fast numerical evaluation using Fast Fourier Transforms. The advantage of the propagation method will be demonstrated on various examples.

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  • High-resolution printer for fabricating computer-generated display holograms Reviewed

    Kyoji Matsushima, Atsushi Joko

    Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers   56 ( 12 )   1989 - 1994   2002

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    A special-purpose high-resolution printer has been constructed for fabricating computer-generated holograms. This printer is capable of drawing fringe patterns exceeding 104 dpi in resolution. The patterns are numerically synthesized and have a continuous gray level. The print time is less than an hour for holograms measuring 1 cm2. The mechanism and structure of the constructed printer and optically reconstructed images of holograms fabricated by using the printer are described.

    DOI: 10.3169/itej.56.1989

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  • New creation algorithm for digitally synthesized holograms in surface model by diffraction from tilted planes Reviewed

    K Matsushima, H Schimmel, F Wyrowski

    PRACTICAL HOLOGRAPHY XVI AND HOLOGRAPHIC MATERIALS VIII   4659   53 - 60   2002

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    Novel method for synthesizing light waves from objects expressed in surface model is presented for fast creation of digitally synthetic holograms. This method has a feature of coordinates rotation in Fourier domain, in which only twice FFTs and an interpolation of spectrum are necessary for calculation of light waves from each object's plane. Therefore, presented method is rather faster than conventional ray-tracing when large scale full-parallax holograms are synthesized in a surface model. Phases of a surface object are also discussed in relation to controlling the direction and diffusiveness of object waves. Furthermore, fabrication of a hologram based on the method and its reconstruction are presented for a demonstration.

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  • Computer-generated full-parallax holograms for three-dimensional surface-objects with shading Reviewed

    Kyoji Matsushima, Kazumi Honjyo

    Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers   56 ( 6 )   986 - 992   2002

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    A method has been developed for synthesizing full-parallax binary-amplitude holograms that can shade three-dimensional objects expressed in a surface model. The brightness of plane surfaces formed with point sources of light is modeled based on radiometry. A procedure is used to compensate for the change in brightness as the direction of observation changes, A masking technique is used to modify the brightness of the plane surfaces and to shade reconstructed images of binary holograms, Optically reconstructed three-dimensional images of objects with shading were demonstrated using this method.

    DOI: 10.3169/itej.56.986

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  • Output Properties of an Optically Side-Pumped Molecular Laser Reviewed

    MATSUSHIMA Kyoji, M. Kajiyama, M. Ohtsuki, M. Takai

    The Review of Laser Engineering   29巻,260-267頁 ( 4 )   260 - 267   2001

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    This paper presents a novel type of optically pumped molecular laser and its output propertieswhich were measured for several operational parameters. This optically side-pumped laser emits a sub-millimeter wave and features a lateral incidence of the infrared pump light. The dimension of the fabricated laser is 640×190 ×185 mm<SUP>3</SUP> and is considerably compact compared to conventional, optically pumped molecular lasers. The optically side-pumped laser, which operates on a CH<SUB>3</SUB>OH 119μm line pumped with CO<SUB>2</SUB> 9P (36), emitted a power of 39 μW at a pump power of 13 W. Gain profiles, absorption efficiency and the reflection loss of pump light in the new laser are theoretically discussed and compared with those of the conventional end-pumped type.

    DOI: 10.2184/lsj.29.260

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    Other Link: http://hdl.handle.net/10112/5898

  • Recurrence formulas for fast creation of synthetic three-dimensional holograms Reviewed

    K Matsushima, M Takai

    APPLIED OPTICS   39 ( 35 )   6587 - 6594   2000.12

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    A method for accelerating the synthesis of computer-generated three-dimensional (3-D) holograms, based on conventional ray tracing, is proposed. In ray tracing, computers expend almost all of their resources in calculating the 3-D distances between each one of the point sources composing an object and a sampling point on the hologram. We present recurrence formulas that precisely compute the distances and reduce the computation time for synthesizing holograms to one half to one quarter, depending on the processor type. We demonstrate that a full-parallax hologram with an area of 4800 x 4800 pixels, synthesized for a 3-D object containing 966 point sources of light, is computed within 17 min and is optically reconstructed. (C) 2000 Optical Society of America OCIS codes: 000.4430, 090.1760, 090.2870.

    DOI: 10.1364/AO.39.006587

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  • Anisotropic unidirectional operation of an optically-pumped CH3OH ring laser Reviewed

    K Matsushima, K Hirata, T Ariyasu, N Sokabe

    OPTICS COMMUNICATIONS   130 ( 4-6 )   272 - 278   1996.10

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    We report directional anisotropy of the outputs of an optically pumped far-infrared ring laser, which operates on the 119 mu m line of CH3OH, with special emphasis on the effect of the Raman-type two-photon process on the unidirectional operation. By use of a Doppler broadened three-level system which allows the coexistence of two counterpropagating far infrared (fir) fields as well as a pump field in the cavity, an expression for the fir intensity determining equations is derived, A numerical calculation has been carried out to map the threshold contours on the parameter plane spanned by the cavity and pump detuning frequencies. The output directionality is shown to be a direct consequence of the gain anisotropy due to the two-photon process. Furthermore, it is also noted how the dynamic Stark effect modifies the threshold contours of the forward output.

    DOI: 10.1016/0030-4018(96)00360-4

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  • UNIDIRECTIONALITY OF AN OPTICALLY PUMPED FAR-INFRARED RING LASER Reviewed

    K MATSUSHIMA, N HIGASHIDA, N SOKABE, T ARIYASU

    OPTICS COMMUNICATIONS   117 ( 5-6 )   462 - 468   1995.6

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    An experimental and theoretical investigation has been made on the unidirectional operation of an optically pumped far infrared ring laser. A ring laser operating on the 119 mu m line of CH3OH experiences reversal of output direction in either case of (a) the pump frequency being tuned across the line center of the infrared pump transition or (b) the fir cavity being tuned across the far infrared line center. A model based on two-mode laser theory predicts the output directionality of the optically pumped fir ring laser.

    DOI: 10.1016/0030-4018(95)00189-F

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  • 光励起遠赤外リングレーザー出力の方向特性 Reviewed

    松島 恭治, 曽我部, 村井, 有安

    レーザー研究   Vol.20, p.p.20-30 ( 1 )   p20 - 30   1992

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    DOI: 10.2184/lsj.20.20

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  • SIMILARITY IN GROWTH OF OUTPUT POWER OF CW FAR INFRARED-LASERS Reviewed

    K MATSUSHIMA, N SOKABE, A MURAI

    INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES   10 ( 1 )   43 - 53   1989.1

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    DOI: 10.1007/BF01009116

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  • Homogeneous linewidths and level-crossing signals of some pump transitions of 12CH30H CW laser lines Reviewed

    N. Sokabe, K. Matsushima, A. Murai

    Proceedings of SPIE - The International Society for Optical Engineering   1039   354 - 355   1988.11

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    Electric field effect on absorption in some pump transitions of CH3OH fir laser lines is analysed in terms of zero-field level-crossing effect with reference to homogeneous linewidths observed in intermodulated absorption method with photoacoustic etection. © 1988 SPIE.

    DOI: 10.1117/12.978486

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  • Growth of the Output Power of an Optically Pumped CW Far Infrared Laser -Rate Equation and Maxwell-Bloch Equation- Reviewed

    The Review of laser engineering   Vol.16, p.p.63-74 ( 2 )   p63 - 74   1988

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    DOI: 10.2184/lsj.16.63

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    Other Link: http://hdl.handle.net/10112/5899

  • NONLINEAR LEVEL-CROSSING IN THE INFRARED TRANSITIONS OF OPTICALLY PUMPED FAR INFRARED-LASER MEDIA Reviewed

    N SOKABE, Y TAMURA, K MATSUSHIMA, A MURAI

    INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES   8 ( 9 )   1145 - 1163   1987.9

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    DOI: 10.1007/BF01010818

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  • レーザー基礎

    堀 義和, 松井 康, 雄谷 順, 芹澤 皓元, 佐藤 久直, 谷井 一者, 立川 真樹, 松鳥 房和, 清水 忠雄, 北鳥 巌, 木下 浩信, 高島 浩嘉, 粱瀬 暢, 岩澤 宏, 高橋 昭彦, 松本 治, 前田 三男, 宮副 泰, 酒井 広文, 宮崎 健創, 佐藤 卓蔵, 八田 浩一, 寺田 よしえ, 服部 幸彦, 松島 恭治, 曽我部 伸, 村井 昭

    レーザー研究   15   23 - 29   1987

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    DOI: 10.2184/lsj.15.Supplement_23

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Books

  • Introduction to Computer Holography

    Kyoji Matsushima( Role: Sole author)

    Springer  2020.3  ( ISBN:9783030384357

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  • 空間立体表示とユーザインタフェース

    ( Role: Joint author大規模計算機合成ホログラムによる奥行きの深い3D映像(第3章11節))

    S&T出版  2019.5 

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  • 私の未来学:ホログラフィ技術を用いた高品質な立体画像―光の干渉縞をデジタル合成、眼鏡なしで3D鑑賞―

    松島恭治( Role: Sole author)

    コンバーテック, (株)加工技術研究会  2017.1 

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  • Hidden-surface removal by multiple masks in digitized holography

    ( Role: Joint author)

    HODIC Circular  2013.10 

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  • Development status of an integrated design system for designers and researchers in computer holography

    ( Role: Joint author)

    HODIC Circular  2013.9 

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  • A wavefront printer using phase SLM for producing computer-generated volume holograms

    ( Role: Joint author)

    HODIC Circular  2013.9 

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  • 大規模光伝搬シミュレーション技術とそのコンピュータホログラフィへの応用

    松島恭治( Role: Sole author)

    OITDAオプトニューズ  2013.5 

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  • コンピュータホログラフィの現状―MITミュージアム展示用ホログラムの制作を通して―

    ( Role: Joint author)

    2013.1 

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  • Stepping closer to the perfect 3D digital image

    K. Matsushima, S. Nakahara( Role: Joint author)

    SPIE Newsroom  2012.11 

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  • コンピュータホログラム「Brothers」制作記 ― MITミュージアムでのCGH展示を目指して -

    松島恭治( Role: Sole author)

    HODIC Circular  2012.9 

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  • 2011年光学会の研究動向 - 8.ホログラフィックディスプレイ

    松島恭治( Role: Sole author)

    光学  2012.4 

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  • コンピュータホログラフィ -新しいデジタルアートとして-

    松島恭治( Role: Sole author)

    光アライアンス  2012.1 

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  • 新しいデジタルアートとしてのコンピュータホログラフィ

    松島恭治( Role: Sole author)

    HODIC Circular  2011.2 

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  • Computer holography: 3D imaging of virtual and real objects

    K. Matsushima( Role: Sole author)

    2011.2 

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  • テクノ編集局:3次元ホログラフィー

    松島恭治( Role: Sole author)

    日刊工業新聞社  2011.2 

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  • 山岳風景を再生する超高解像度CGHの合成

    東 健太郎(D), 松島恭治, 中原住雄( Role: Joint author)

    HODIC Circular  2010.9 

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  • 合成開口デジタルホログラフィで記録した実物体のCGH

    有馬恭旭(D), 松島恭治, 中原住雄( Role: Joint author)

    HODIC Circular  2010.9 

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  • 関西大、計算機合成ホログラムの計算量を1/10に減らす技術開発

    松島恭治( Role: Sole author)

    日刊工業新聞社  2010.6 

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  • 回折基礎論

    松島恭治( Role: Joint author)

    辻内監修 「ホログラフィー材料・応用便覧」 エヌ・ティー・エス  2007 

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  • 表面光波回折法によるデジタル合成ホログラムの進展―全方向視差ホログラムのリアルタイムレンダリングを目指して―

    松島恭治( Role: Sole author)

    映像情報メディア学会技術報告  2004 

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  • 表面光波回折法によるデジタル合成ホログラムの進展―全方向視差ホログラムのリアルタイムレンダリングを目指して―

    松島恭治( Role: Sole author)

    映像情報メディア学会技術報告  2004 

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MISC

  • コンピュータホログラフィ技術を中心とした超大規模データ処理指向コミュニケーション (特集 プロジェクト研究報告概要集) -- (私立大学戦略的研究基盤形成支援事業プロジェクト)

    松島 恭治, 棟安 実治, 梶川 嘉延, 中原 住雄, 四方 博之, 徳丸 正孝, 田原 樹, 吉田 壮, Popovski Petar, Gan Woon-Seng, 田口 亮, 山口 雅浩, 坂本 雄児, 伊藤 智義, 下馬場 朋禄

    技苑 = Innovative technology world   ( 146 )   21 - 28   2018

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  • A New Method of Lossless Coding for Binary Holographic Interference Fringes

    117 ( 235 )   13 - 16   2017.10

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  • Visual Effects Accompanied by Viewpoint Movement in Computer Generated Holograms

    41 ( 31 )   1 - 4   2017.9

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  • 固有値分解を用いた光波データの圧縮

    茅 立基, 棟安 実治, 松島 恭治, 吉田 壮, 田口 亮

    関西大学先端科学技術シンポジウム講演集   21   266 - 269   2017.1

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  • コンピュータホログラフィ技術を中心とした超大規模データ処理指向コミュニケーション (特集 プロジェクト研究報告概要集) -- (私立大学戦略的研究基盤形成支援事業プロジェクト)

    松島 恭治, 棟安 実治, 梶川 嘉延, 四方 博之, 徳丸 正孝, 田原 樹, 吉田 壮

    技苑 = Innovative technology world   ( 144 )   31 - 38   2017

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  • Lossy Coding of Wave Field Data Using Singular Value Decomposition

    116 ( 344 )   13 - 18   2016.12

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  • Material Expression of Computer Generated Holograms Using Orthographic Ray-Sampling Plane

    116 ( 280 )   13 - 16   2016.10

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  • Full-color high-definition CGH using color filter and its optical reconstruction

    40 ( 29 )   9 - 12   2016.9

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  • Reconstruction of full-parallax high-definition CGHs calculated by the point cloud with GPU

    中辻 憲昭, 松島 恭治, 伊藤 智義, 下馬場 朋禄

    映像情報メディア学会技術報告 = ITE technical report   40 ( 29 )   13 - 16   2016.9

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    Full-parallax high-definition CGHs were mainly created by using the polygon-based method because of the computation time. In particular, high-definition CGHs fabricated by laser lithography have never been calculated by the point cloud. However, development of GPU makes the point cloud be useful for creating high-definition CGHs. In this paper, we actually calculate full-parallax high-definition CGHs with 4 billion pixels by using the point cloud with GPU and fabricate them. The computation time and the optical reconstruction are verified in comparison with the polygon-based method.

    DOI: 10.11485/itetr.40.29.0_13

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  • コンピュータホログラフィ技術を中心とした超大規模データ処理指向コミュニケーション

    松島恭治, 棟安実治, 梶川嘉延, 中原住雄, 四方博之, 徳丸正孝, 田原樹, POPOVSKI Petar, GAN Woon‐Seng, 田口亮, 山口雅浩, 坂本雄児, 伊藤智義, 下馬場朋禄

    技苑   ( 142 )   43‐54 - 50   2016.3

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  • 2値ホログラム干渉縞データのロスレス符号化の検討

    棟安 実治, 松島 恭治, 田口 亮

    関西大学先端科学技術シンポジウム講演集   20   142 - 145   2016.1

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  • コンピュータホログラフィ技術を中心とした超大規模データ処理指向コミュニケーション (特集 プロジェクト研究報告概要集) -- (私立大学戦略的研究基盤形成支援事業プロジェクト)

    松島 恭治, 棟安 実治, 梶川 嘉延, 中原 住雄, 四方 博之, 徳丸 正孝, 田原 樹, Popovski Petar, Gan Woon-Seng, 田口 亮, 山口 雅浩, 坂本 雄児, 伊藤 智義, 下馬場 朋禄

    技苑 = Innovative technology world   ( 142 )   43 - 50   2016

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  • A Study on Lossless Coding for Binary Holographic Interference Fringes

    115 ( 208 )   25 - 30   2015.9

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  • Spatial 3D imaging in computer holography

    115 ( 208 )   57 - 62   2015.9

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  • コンピュータホログラフィ技術を中心とした超大規模データ処理指向コミュニケーション

    松島恭治, 棟安実治, 梶川嘉延, 中原住雄, 四方博之, 徳丸正孝, 田原樹, POPOVSKI Petar, GAN Woon‐Seng, 田口亮, 山口雅浩, 坂本雄児, 伊藤智義, 下馬場朋禄, 宮岡貴史, 増田幸勇, CHUANG Shi, 中村大樹

    技苑   ( 140 )   67-75,77-79   2015.3

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  • コンピュータホログラフィの研究を支援する関大デジタルホロスタジオ (関西大学先端科学技術推進機構50周年記念)

    松島 恭治, 中原 住雄

    関西大学先端科学技術シンポジウム講演集   19   155 - 158   2015.1

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  • Acceleration of the switch-back technique for fast occlusion processing in computer holography

    MASUDA Sachio, MATSUSHIMA Kyoji, NAKAHARA Sumio

    ITE Technical Report   38 ( 34 )   5 - 8   2014.9

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    Appropriate occlusion-processing is absolutely necessary for reconstruction of fine 3D images in computer holography. A method called the switch-back technique allows us to drastically reduce computation time of the occlusion-processing based on the polygon-by-polygon silhouette light-shielding. In this technique, further reduction of computation time can be achieved by splitting an object to some sub-objects along with depth direction. However, the number of numerical propagations between the sub-objects increases with increasing the number of sub-objects. As a result, there is an optimum number of sub-objects. In this paper, we propose a novel technique to estimate more accurate optimal number of sub-objects than that by the conventional technique.

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  • 画像圧縮とCGH

    棟安 実治, 松島 恭治

    関西大学先端科学技術シンポジウム講演集   18   145 - 148   2014.1

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  • レーザリソグラフィを用いたサブミクロン領域のホログラフィック干渉縞の作製 (プロジェクト研究報告概要集) -- (戦略的研究基盤形成支援事業プロジェクト)

    中原 住雄, 松島 恭治

    技苑 = Innovative technology world   ( 138 )   62 - 64   2014

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  • A wavefront printer using phase SLM for producing computer-generated volume holograms

    NISHII Wataru, MATSUSHIMA Kyoji

    ITE Technical Report   37 ( 37 )   13 - 16   2013.9

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    The wavefront printer is equipment for producing computer-generated holograms (CGH) as volume holograms. This printer records the wavefront generate by spatial light modulator (SLM). We use the phase-only SLM to generate the wavefront because of its wide space-band product. However, the phase-only SLM causes a problem of degradation of reconstructed images because of coding noise due to phase only modulation. This paper describes a technique to make complex amplitude modulation by using a phase-only SLM and ease the coding noise.

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  • Development status of an integrated design system for designers and researchers in computer holography

    Murata Shumpei, Matsushima Kyoji, Nakahara Sumio

    ITE Technical Report   37 ( 37 )   9 - 12   2013.9

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    In past several years, "computer holography" that is the technique for creating computer-generated hologram (CGH) is being developed and expected as a new digital art. However, artists or designers who are potential creators of hologram works have the problem of acquiring deep knowledge in optics and programming skills that are required to design 3D scenes and calculate the object field of the scene. To ease this situation, we are developing software system for designing 3D scenes and creating CGH works. This system mainly consists of two tools that are an interactive design tool for designing 3D scenes and a class library which describes the designed 3D scenes as XML and makes it possible to save/load the scene and reuse it in researcher's experimental programs. In this report, we mainly focus on the process to create a real CGH work by using the interactive design tool at current development stage.

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  • Development of software tools for scene design and numerical synthesis of object fields in computer holography

    MURATA Shumpei, MATSUSHIMA Kyoji

    ITE Technical Report   36 ( 36 )   25 - 28   2012.8

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    Computer-generated holograms that reconstruct object fields synthesized by polygon-based method or captured by digitized holography are expected as a new digital art. However, artists or designers, who are potential creators of hologram works, are required to have deep knowledge in optics and programming skills in order to calculate the object fields of 3D scenes by using the methods. To ease this situation, we are developing software tools for scene design and numerical synthesis of object fields. The tools are easy to use for any non-expert and capable of describing the parameters of 3D scenes and object fields as a generic XML format. This system is expected to provide wide software basis in computer holography, such as computation engines for various purposes. We report the system architecture and the current state of the development.

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  • Holographic Display

    MATSUSHIMA Kyoji

    41 ( 4 )   227 - 229   2012.4

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  • 究極の3次元画像

    松島恭治

    デジタイズド・インフォメーション社(ユーチューブ)   2010.7

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    (英語版)YouTube: http://www.youtube.com/watch?v=DdOveIue3sc

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  • D-11-75 Full-Parallax Computer-Generated Holograms by Using Hidden-Surface Removal Based on Painter's Algorithm

    Oshima Yuki, Saeki Yuichi, Nakahara Sumio, Matsushima Kyoji

    Proceedings of the IEICE General Conference   2007 ( 2 )   75 - 75   2007.3

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  • D-11-76 White Light Reconstructable Reflection-Type Computer-Generated Holograms Made of Photopolymer

    Fukuda Satoshi, Oi Yasuhiro, Matsushima Kyoji

    Proceedings of the IEICE General Conference   2007 ( 2 )   76 - 76   2007.3

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  • D-11-74 Numerical reconstruction of synthetic aperture digital holograms : Images reconstructed on a tilted plane and from different angles

    Nakatsuji Tatsuya, Kobayashi Toshiyuki, Minami Yudai, Matsushima Kyoji

    Proceedings of the IEICE General Conference   2007 ( 2 )   74 - 74   2007.3

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  • コンピューター合成ホログラムマスクパターンのコンタクト露光による高効率フォトポリマー光学素子の開発(委託者:ダイソー株式会社)

    松島 恭治

    2006.6

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  • 3Dモデルベースの動画ホログラム再生に関する研究(委託者:株式会社NTTドコモ)

    松島 恭治

    2006.6

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  • D-11-72 Lensless-Fourier Transform Digital Holography by Using Phase-Shifting

    Nakatsuji Tatsuya, Nagaoka Tsutomu, Matsushima Kyoji

    Proceedings of the IEICE General Conference   2006 ( 2 )   72 - 72   2006.3

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  • A high-resolution fringe printer for studying synthetic holograms

    Kyoji MATSUSHIMA, Sachiko KOBAYASHI, Hiroki MIYAUCHI

    2006

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  • D-11-83 Digital Recording of 3-D Image with Large Visual Field by Using Lensless Fourier Transform Holography

    Nagaoka Tsutomu, Fujikawa Masaki, Matsushima Kyoji

    Proceedings of the IEICE General Conference   2005 ( 2 )   83 - 83   2005.3

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  • 平成16年度立体映像表現に関する調査研究報告書

    松島恭治, 他

    日本機械工業連合会/日本オプトメカトロニクス協会編   27―29   2005

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  • Exact hidden-surface removal in digitally synthetic full-parallax holograms

    Kyoji MATSUSHIMA

    2005

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  • ドット描画式ドラム型フリンジプリンタの開発

    小林俊輔, 宮内宏之, 松島恭治

    HODIC Circular   25, No.4, pp.2-7 ( 3 )   2 - 7   2005

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  • 仮想物体の光を合成する計算機合成ホログラム

    松島 恭治

    技苑   119   16 - 16   2004.9

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  • Progress in Digitally Synthetic Holograms by the Surface Diffraction Model : Toward the Real-Time Rendering of Full-Parallax Holograms

    MATSUSHIMA Kyoji

    ITE technical report   28 ( 50 )   5 - 8   2004.9

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  • H-017 Medical Image Transmission Using 3D Hierarchical lossless image compression

    Myojyoyama Atsushi, Sakamoto Yuji, Matsushima Kyoji

    3 ( 2 )   441 - 442   2004.8

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  • D-11-157 Phase-Encoding of Digital Fourier Hologram by an Adaptive Error-Diffusion Using the Simultaneous Perturbation Algorithm

    Matsuo Daiki, Nishimura Shinsuke, Matsushima Kyoji

    Proceedings of the IEICE General Conference   2004 ( 2 )   157 - 157   2004.3

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  • D-11-159 Anew High-Resolution Printer for Fabricating Digitally Synthetic Holograms

    Yamanaka Syunsuke, Kuribayashi Yuma, Yamane Yoshihisa, Miyauchi Hiroyuki, Matsushima Kyoji

    Proceedings of the IEICE General Conference   2004 ( 2 )   159 - 159   2004.3

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  • D-11-160 A Hybrid Digital Hologram by Transferring Digitally Synthetic Fringes

    Mitsudome Yasuhito, Okumura Takumi, Matsuo Daiki, Matsushima Kyoji

    Proceedings of the IEICE General Conference   2004 ( 2 )   160 - 160   2004.3

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  • A Wave Optical Algorithm for Hidden-Surface Removal in Digitally Synthetic Full-Parallax Holograms for Three-Dimensional Objects

    Kyoji MATSUSHIMA, Akinobu KONDOH

    2004

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  • 回折光学素子における設計と応用および評価方法

    松島恭治, 他

    技術情報協会 セミナー   No.408451   2004

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  • Fast calculation method for optical diffraction on tilted planes by use of the angular spectrum of plane waves

    MATSUSHIMA Kyoji, Hagen Schimmel, Frank Wyrowski

    Journal of the Optical Society of America. A   20 ( 9 )   1755 - 1762   2003.9

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  • Digitally Synthetic Holograms by Use of a Hybrid between the Point Source and the Layer Model of CGHs

    Kondoh Akinobu, Ueno Tsuyoshi, Matsushima Kyoji

    Proceedings of the IEICE General Conference   2003 ( 2 )   143 - 143   2003.3

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  • A Phase-Encoded Digitally Synthetic Holograms by Use of Photo-Polymer

    Kawabuchi Tsunaki, Matsuo Daiki, Yokoyama Kazunori, Matsushima kyoji

    Proceedings of the IEICE General Conference   142 - 142   2003

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  • 同時接動型最適化法による位相型回折光学素子の設計

    松島 恭治

    技苑   109   9 - 14   2001.11

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  • シリコン系材料による電子・光信号変換素子並びに論理演算素子に関する研究 (産学連携への掛け橋)

    大村 泰久, 前田 裕, 松島 恭治

    技苑   104   28 - 29   2000.8

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  • Phase Computation Employing a Recurrence Formula with single-precision for Digital Hologram

    Matsushima K., Ariyasu T.

    Proceedings of the IEICE General Conference   1999 ( 2 )   150 - 150   1999.3

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  • Approximation Algorithm with Error Control for Computer-Generated Fresnel Holograms

    Matsushima K., Takai M.

    Proceedings of the Society Conference of IEICE   1998   190 - 190   1998.9

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  • 8)ポリゴンモデル3次元物体の計算機合成ホログラムに関する検討(映像表現研究会)

    松島 恭治, 有安 富雄

    映像情報メディア学会誌 : 映像情報メディア   51 ( 1 )   81 - 82   1997.1

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  • An investigation on Computer-Generated Holograms for Polygon-Model 3-D Objects

    MATSUSHIMA K., ARIYASU T.

    ITEJ Technical Report   20 ( 60 )   29 - 32   1996.11

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    An investigation has been made on computer-generated holograms for 3-D objects composed of plane surfaces. Brightness of the plane surface uniformly filled with point sources is analyzed by a model based on photometry. Algorithm which effectively utilizes geometric relations between the plane surface and a hologram is suggested for a fast calculation of object waves.

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  • Anisotrropic Gain and Output Reversal of an Optically Pumped Far-Infrared Ring Laser

    MATSUSHIMA K., HIRATA K., TOGAWA N., SOKABE N., ARIYASU T.

    15   9 - 9   1995.1

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  • 光励起遠赤外リングレ-ザにおける発振方向特性の解析

    松島 恭治, 有安 富雄

    技苑   ( 68 )   p6 - 9   1991.9

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  • 4a-ZF-8 Growth of the Output Power of an Optically pumped cw Far Infrared Ring Laser

    Matsushima K., Higashida N., Sokabe N., Murai A.

    1989 ( 2 )   347 - 347   1989.9

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    Language:Japanese   Publisher:The Physical Society of Japan (JPS)  

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  • 4a-ZF-9 Homogeneous Spectral Line Shape of the Pump Transition of the 119-μm CH_3OH Laser

    Sokabe N., Matsushima K., Murai A.

    1989 ( 2 )   348 - 348   1989.9

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  • 5a-E5-6 CH_3OH遠赤外レーザーの励起遷移に於ける準位交差

    曽我部 伸, 松島 恭治, 村井 昭

    秋の分科会講演予稿集   1988 ( 2 )   333 - 333   1988.9

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  • 29p-D-4 光励起遠赤外シュタルクレーザーと赤外準位交差(量子エレクトロニクス)

    曽我部 伸, 田村 佳之, 松島 恭治, 村井 昭

    年会講演予稿集   42 ( 2 )   348 - 348   1987.3

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  • 29a-QF-1 光励起遠赤外レーザーにおけるレーザー光の成長過程とその解析

    松島 恭治, 田伐 智, 曽我部 伸, 村井 昭

    秋の分科会講演予稿集   1986 ( 2 )   405 - 405   1986.9

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  • 29a-CC-4 光励起cwCH_3OHレーザーにおけるレーザー光の成長過程-REAについて-(量子エレクトロニクス)

    松島 恭治, 曽我部 伸, 村井 昭

    年会講演予稿集   41 ( 2 )   325 - 325   1986.3

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  • 1p-T-10 光励起CH_3OHレーザー発振出力のパルス・シュタルクによる過渡波形の観測

    松島 恭治, 曽我部 伸, 村井 昭

    秋の分科会講演予稿集   1985 ( 2 )   347 - 347   1985.9

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▼display all

Presentations

  • Very large-scale computer-generated hologram for 3D display Invited

    K. Matsushima

    11th International Conference on Optics-photonics, Design & Fabrication (ODF'18)  2018.11 

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  • Recent progress in computer holography: Color and monochrome 3D imaging by large‐scale computer‐generated holograms Invited

    K. Matsushima

    The 18th International Meeting on Information Display (IMID2018)  2018.8 

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  • Very large‐scale CGHs for monochrome and full‐color 3D imaging Invited

    K. Matsushima

    Optics and Photonics Congress 2018  2018.8 

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  • Occlusion Processing in Computer Holography -With a Focus on Switch-Back Technique- Invited

    K. Matsushima

    The 22nd International Display Workshops (IDW '15)  2015.12 

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    Venue:Otsu (Shiga)  

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  • Full-color high-definition CGH reconstructing hybrid scenes of physical and virtual objects

    Y. Tsuchiyama, K. Matsushima, S. Nakahara

    Practical Holography XXXI: Materials and Applications  2017.2 

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    Venue:San Francisco  

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  • Comparison of computation time and image quality between full-parallax 4G-pixels CGHs calculated by the point cloud and polygon-based method

    N. Nakatsuji, K. Matsushima

    Practical Holography XXXI: Materials and Applications  2017.2 

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    Venue:San Francisco  

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  • 時分割電子ホログラフィにおける再生像の改善

    土岡智旭(D), 西川凌(B), 松島恭治

    第21回関西大学先端科学技術シンポジウム  2017.1 

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  • フルカラーデジタイズドホログラフィ

    園部徳晃(D), 土山泰裕(D), 松島恭治

    第21回関西大学先端科学技術シンポジウム  2017.1 

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  • Calculation and Fabrication of photorealistic hologram using orthographic ray-sampling plane

    S. Igarashi, T. Nakamura, K. Matsushima, M. Yamaguchi

    The 6th Japan-Korea Workshop on Digital Holography and Information Photonics (DHIP2016)  2016.12 

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    Venue:Sapporo Convention Center  

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  • コンピュータホログラフィによる自然で奥行の深い3次元画像の生成 Invited

    松島恭治, 中原住雄

    平成28年電気関係学会関西連合大会  2016.11 

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    Venue:大阪府立大学  

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  • Full-color high-definition CGH employing RGB color filters Invited

    K. Matsushima, Y. Tsuchiyama

    International Workshop on Holography and related technologies (IWH2016)  2016.11 

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    Venue:Jiaoxi (Taiwan)  

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  • フルカラーデジタイズドホログラフィによるCGモデルと実在物のハイブリッドシーンの再生

    園部徳晃(D), 土山泰裕(D), 松島恭治

    Optics & Photonics Japan 2015  2016.11 

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    Venue:筑波大学東京キャンパス  

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  • 正射影光線サンプリング面を用いた計算機合成ホログラムによる質感表現

    五十嵐俊亮(D), 中村友哉, 松島恭治, 山口雅浩

    映像情報メディア学会「画像技術,視覚・画質関連,その他一般」  2016.10 

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    Venue:機械振興会館(東京)  

    映情学技報, vol. 40, no. 36, 3DIT2016-29, pp. 13-16, 2016年10月

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  • 点光源法とGPUで計算した全方向視差高解像度CGHの再生像

    中辻憲昭(D), 松島恭治, 伊藤智義, 下馬場朋禄

    HODIC Circular  2016.9 

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  • カラーフィルタ方式フルカラー高解像度CGHとその光学再生像

    土山泰裕(D), 松島恭治

    HODIC Circular  2016.9 

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  • 反射型高解像度CGHのコンタクトコピーによるフルカラー体積型転写CGHの作成

    中尾弘希(D), 松島恭治:

    HODIC Circular  2016.9 

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  • Full-color high-definition CGH using color filter and filter design based on simulation

    Y. Tsuchiyama, K. Matsushima, S. Nakahara, Y. Sakamoto

    Imaging and Applied Optics 2016 (DH2016)  2016.7 

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    Venue:Heidelberg (Germany)  

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  • Light-source switching time-division multiplexing holographic display and reduction of degradation by higher order diffraction images

    Y. Higashino, T. Tsuchioka, K. Matsushima

    Imaging and Applied Optics 2016 (DH2016)  2016.7 

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    Venue:Heidelberg (Germany)  

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  • 光源スイッチング方式時分割電子ホログラフィにおける偏光特性を用いた高次回折像軽減

    東野好伸(D), 土岡智旭(D), 松島恭治

    3次元画像コンファレンス2016講演論文集  2016.7 

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  • 光線サンプリング面の手法を用いて合成した実物体の高解像度計算機合成ホログラム

    伊藤眞人(D), 松島恭治, 山口雅浩

    3次元画像コンファレンス2016講演論文集  2016.7 

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  • 高解像度計算機合成ホログラムにおける点光源法とポリゴン法の速度・画質比較

    中辻憲昭(D), 松島恭治, 伊藤智義, 下馬場朋禄

    3次元画像コンファレンス2016講演論文集  2016.7 

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  • フルカラー高解像度CGH用カラーフィルタの設計とその光学再生像

    土山泰裕(D), 松島恭治, 中原住雄, 坂本雄児

    3次元画像コンファレンス2016講演論文集  2016.7 

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  • フルカラーデジタイズドホログラフィとその光学再生像

    園部徳晃(D), 土山泰裕(D), 松島恭治

    3次元画像コンファレンス2016講演論文集  2016.7 

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  • 正射影光線サンプリング面による大規模計算機合成ホログラムの分割計算

    五十嵐俊亮(D), 中村友哉, 松島恭治, 山口雅浩

    第9回計算オプティクス研究会  2016.7 

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    Venue:埼玉大(東京)  

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  • Efficient calculation method for realistic deep 3D scene hologram using orthographic projection

    S. Igarashi, T. Nakamura, K. Matsushima, M. Yamaguchi

    Practical Holography XXX: Materials and Applications  2016.3 

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  • 電子ホログラフィの解像度拡大

    東野好伸(D), 土岡智旭(D), 松島恭治

    第20回関西大学先端科学技術シンポジウム  2016.1 

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  • 高解像度計算機合成ホログラムのフルカラー化

    土山泰裕(D), 松島恭治, 中原住雄

    第20回関西大学先端科学技術シンポジウム  2016.1 

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  • Scale expansion beyond a hundred billion pixels in computer holography

    K. Matsushima

    International Symposium on Holography: Bridging Art and Technology (HODIC in Taiwan 2015)  2015.12 

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    Venue:Hsinchu (Taiwan)  

    http://www.facebook.com/HODIC2015/

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  • Comparison of computation time and image quality between CGHs calculated by the point cloud and polygon-based method

    N. Nakatsuji, K. Matsushima, T. Ito, T. Shimobaba

    International Symposium on Holography and Related Technologies 2015 (IWH2015)  2015.12 

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    Venue:Ginowan (Okinawa)  

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  • A Simulation technique for selection of color filter used for full-color high-definition CGH

    Y. Tsuchiyama, K. Matsushima, S. Nakahara, Y. Sakamoto

    International Symposium on Holography and Related Technologies 2015 (IWH2015)  2015.12 

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    Venue:Ginowan (Okinawa)  

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  • Capture of Large-Scaled Wave Fields for Full-Color Digitized Holography

    N. Sonobe, Y. Tsuchiyama(D, K. Matsushima

    International Symposium on Holography and Related Technologies 2015 (IWH2015)  2015.12 

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    Venue:Ginowan (Okinawa)  

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  • 計算機合成ホログラム出力センタの設立とその活動 ―関大デジタルホロスタジオにおける取り組み―

    松島恭治, 中原住雄, 井伊美穂, 石井勢津子, 山口雅浩, 坂本雄児, 伊藤智義, 下馬場朋禄

    超臨場感コミュニケーション産学官フォーラム, 超臨場感立体映像技術に関する調査WG セミナー2  2015.11 

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  • 光源スイッチング時分割方式による電子ホログラフィの視域拡大

    東野好伸(D), 土岡智旭(D), 松島恭治

    Optics & Photonics Japan 2015  2015.10 

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    Venue:筑波大学東京キャンパス  

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  • カラーフィルタ方式フルカラー高解像度計算機合成ホログラムの再生シミュレーション

    土山泰裕(D), 松島恭治, 中原住雄, 坂本雄児

    Optics & Photonics Japan 2015  2015.10 

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    Venue:筑波大学東京キャンパス  

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  • Computer holography as an application of computational optics

    K. Matsushima, S. Nakahara

    Computational Optics (SPIE Optical System Design 2015)  2015.9 

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    Venue:Jena (Germany)  

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  • コンピュータホログラフィによる空間立体像の生成

    松島恭治

    電子情報通信学会スマートインフォメディアシステム研究会, 信学技法  2015.9 

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  • Digital signal processing of light in holographic 3D imaging Invited

    K. Matsushima

    Applications of Digital Image Processing XXXVIII (SPIE Optics+Photonics)  2015.8 

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    Venue:San Diego (USA)  

    Invited

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  • フルカラーデジタイズドホログラフィと自由視点画像のための高解像度光波の取得

    園部徳晃(D), 土山泰裕(D), 松島恭治

    3次元画像コンファレンス2015講演論文集  2015.7 

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  • 高フレームレートSLMを用いた光源スイッチング方式時分割電子ホログラフィ

    東野好伸(D), 上月拓弥(D), 松島恭治

    3次元画像コンファレンス2015講演論文集  2015.7 

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  • カラーフィルタ方式によるフルカラー高解像度計算機合成ホログラムの作成

    土山泰裕(D), 松島恭治, 中原住雄, 坂本雄児

    3次元画像コンファレンス2015講演論文集  2015.7 

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  • New techniques in high-definition computer holography

    K. Matsushima, Y. Tsuchiyama, N. Sonobe, S. Nakahara

    International Symposium on Display Holography 2015 (ISDH2015)  2015.7 

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    Venue:St Petersburg (Russia)  

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  • Reduction of memory usage and full-color reconstruction in high-definition computer holography Invited

    K. Matsushima, Y. Tsuchiyama

    Workshop on Information Optics 2015 (WIO2015)  2015.6 

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    Venue:Kyoto  

    Invited

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  • Frequency filtering for reduction of memory usage in computer holography

    K. Matsushima, S. Nakahara

    OSA Topical Meeting on Digital Holography and Three-Dimensional Imaging 2015  2015.5 

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    Venue:Shanghai (China)  

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  • Optimization of design-wavelength for unobtrusive chromatic aberration in high-definition color computer holography

    T. Miyaoka(D), K. Matsushima, S. Nakahara

    Practical Holography XXIX: Materials and Applications  2015.2 

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    Venue:San Francisco  

    http://dx.doi.org/10.1117/12.2076876

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  • Optimization of the switch-back technique used for fast occlusion-processing in computer holography

    S. Masuda(D), K. Matsushima, S. Nakahara

    Practical Holography XXIX: Materials and Applications  2015.2 

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    Venue:San Francisco (USA)  

    http://dx.doi.org/10.1117/12.2075998

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  • コンピュータホログラフィの研究を支援する関大デジタルホロスタジオ

    松島恭治, 中原住雄

    第19回関西大学先端科学技術シンポジウム講演集  2015.1 

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  • コンピュータホログラフィ研究と作品制作のためのソフトウェア環境

    松島恭治

    HODIC Circular  2014.11 

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  • レーザリソグラフィによるサブミクロンピクセルCGHの作製

    中原住雄, 増田幸勇(D), 松島恭治

    HODIC Circular  2014.11 

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  • Research Facilities for Computer Holography at Kansai University and Several Recent Topics

    K. Matsushima, S. Nakahara, S. Masuda(D), T. Miyaoka(D)

    International Workshop on Holography and Related Technologies 2014 (IWH2014)  2014.10 

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    Venue:Beijing, china  

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  • コンピュータホログラフィにおけるスイッチバック法を用いた隠面消去の高速化手法

    増田幸勇(D), 松島恭治, 中原住雄

    HODIC Circular  2014.9 

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  • Computer holography and a great future of spatial 3D imaging Invited

    K. Matsushima, S. Nakahara

    The 14th International Meeting on Information Display (IMID2014)  2014.8 

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  • Performance of the switch-back technique for fast hidden-surface removal in computer Holography

    K. Matsushima, S. Masuda(D)

    OSA Topical Meeting on Digital Holography and Three-Dimensional Imaging 2014  2014.7 

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    Venue:Seattle  

    http://dx.doi.org/10.1364/DH.2014.DTu2B.7

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  • スイッチバック法を用いたポリゴン単位隠面消去処理の性能とその改良

    増田幸勇(D), 松島恭治, 中原住雄

    3次元画像コンファレンス2014講演論文集  2014.7 

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  • Kinect Fusionを用いた高解像度フルカラーCGHの作成と再生

    宮岡貴史(D), 松島恭治, 中原住雄

    3次元画像コンファレンス2014講演論文集  2014.7 

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  • Switch-back method: A fast technique for hidden-surface removal in computer holography Invited

    K. Matsushima, S. Nakahara

    Workshop on Information Optics 2014 (WIO2014)  2014.7 

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    Venue:Neuchatel (Switzerland)  

    Invited, http://dx.doi.org/10.1109/WIO.2014.6933293

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  • Techniques for applying rigorous light-shielding to high-definition computer holography

    S. Masuda, K. Matsushima, S. Nakahara

    Practical Holography XXVIII: Materials and Applications  2014.2 

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    Venue:San Francisco  

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  • A wavefront printer using phase-only spatial light modulator for producing computer-generated volume holograms

    W. Nishii, K. Matsushima

    Practical Holography XXVIII: Materials and Applications  2014.2 

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    Venue:San Francisco  

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  • 高解像度コンピュータホログラフィにおけるフルカラー化の試み

    宮岡貴史, 松島恭治, 中原住雄

    第18回関西大学先端科学技術シンポジウム講演集  2014.1 

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  • A novel technique for reduction of occlusion errors in digitized holography

    Daichi Fujita, K. Matsushima, S. Nakahara

    2013.11 

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  • Noise reduction of wavefront printer by using effect of complex amplitude modulation of phase-only SLM

    W. Nishii, K. Matsushima

    2013.11 

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  • Rigorous Light-Shielding Using Rotational Transform of Wave-fields in High-Definition Computer Holography

    S. Masuda, K. Matsushima, S. Nakahara

    2013.11 

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  • Recent Techniques for Hidden Surface Removal in Computer Holography Invited

    K. Matsushima, S. Nakahara, S. Masuda, D. Fujita

    The 3rd Korea-Japan Workshop on Digital Holography and Information Photonics(DHIP2013)  2013.11 

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    Venue:Daejeon(Korea)  

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  • A wavefront printer using complex-amplitude modulation by using phase-only SLM

    W. Nishii, K. Matsushima

    International Workshop on Holography and Related Technologies 2013(IWH2013)  2013.10 

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    Venue:Kitami  

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  • Development of an integrated design system for computer holography

    S. Murata, K. Matsushima, D. Fujita, S. Nakahara

    International Workshop on Holography and Related Technologies 2013(IWH2013)  2013.10 

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    Venue:Kitami  

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  • Computer holography: a perfect digital 3D technique for real and virtual objects Invited

    K. Matsushima, S. Nakahara

    5th EOS Topical Meeting on Optical Microsystems  2013.9 

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    Venue:Capri(Italy)  

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  • Development of Rendering Software Tools for Computer Holography

    S. Murata, K. Matsushima, S. Nakahara

    2013.7 

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  • A Reduction Technique of Chromatic Aberration for Creating High-Definition Full-Color CGH

    T. Miyaoka, K. Matsushima, S. Nakahara

    2013.7 

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  • Pseudo-complex amplitude modulation effect in a wavefront printer for producingvolume CGH

    W. Nishii, Naohiro Iwata, K. Matsushima

    2013.7 

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  • Rigorous Light-Shielding for High-Definition Computer Holography

    S. Masuda, K. Matsushima, S. Nakahara

    2013.7 

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  • Rigorous Light-Shielding for Hidden-Surface Removal in High-Definition Computer Holography

    S. Masuda, K. Matsushima, S. Nakahara

    Three Dimensional System and Application 2013(3DSA2013)  2013.6 

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    Venue:Osaka  

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  • Digital resizing of reconstructed object images in digitized holography

    D. Fujita, K. Matsushima, S. Nakahara

    OSA Topical Meeting on Digital Holography and Three-Dimensional Imaging 2013  2013.4 

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    Venue:Hawaii  

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  • Taking advantage of virtual optics in computer holography

    K. Matsushima, D. Fujita, Y. Yoshizaki, S. Nakahara, Y. Arima, S. Nakahara

    2013.2 

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    Venue:Tainan (Taiwan)  

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  • Wave-field rendering in computer holography: a way of creating the perfect 3D digital image Invited

    K. Matsushima, S. Nakahara

    Electronic Imaging 2013 (EI2013)  2013.2 

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    Venue:San Francisco  

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  • Taking advantage of virtual optics in computer holography Invited

    K. Matsushima, D. Fujita, Y. Yoshizaki, S. Nakahara, Y. Arima, S. Nakahara

    2012.12 

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    Venue:Tainan (Taiwan)  

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  • 仮想光学系で生成したホログラフィックステレオグラムを用いたコンピュータホログラム

    吉崎 裕, 松島恭治, 中原住雄

    Optics & Photonics Japan 2012 講演予稿集  2012.10 

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  • 体積型CGH描画用波面プリンタのための空間光変調器を用いた複素振幅書き込みの基礎研究

    西井 渉, 松島恭治

    Optics & Photonics Japan 2012 講演予稿集  2012.10 

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  • デジタイズドホログラフィにおける仮想光学系を用いた物体光のデジタル拡大/縮小編集

    藤田大知, 松島恭治, 中原住雄

    Optics & Photonics Japan 2012 講演予稿集  2012.10 

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  • コンピュータホログラフィのための物体光波合成/編集ツールの開発

    •村田峻平, 松島恭治

    Vol. 32, No. 3, pp.27-30  2012.9 

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  • Computer holography: 3D digital art based on high-definition CGH

    K. Matsushima, S. Nakahara

    International Symposium on Display Holography 2012 (ISDH2012)  2012.7 

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    Venue:MIT Media Lab, Cambridge  

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  • 多視点画像を3Dシーン内に埋め込んだ超高解像度CGHの作成, 3次元画像コンファレンス2012講演論文集

    吉崎 裕(D), 松島恭治, 中原住雄

    3次元画像コンファレンス2012講演論文集  2012.7 

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  • スペクトル評価型誤差拡散を用いたイメージ型CGHのバイナリコーディング

    山下裕士(D), 松島恭治, 中原住雄

    3次元画像コンファレンス2012講演論文集  2012.7 

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  • デジタル化ホログラフィにおける実物体像の拡大・縮小編集

    藤田大知(D), 有馬恭旭(D), 松島恭治, 中原住雄

    3次元画像コンファレンス2012講演論文集  2012.7 

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  • 物体光波のデジタル拡大/縮小編集を用いた高解像度CGHの作成

    藤田大知(D), 有馬恭旭(D), 松島恭治, 中原住雄

    HODIC Circular  2012.5 

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  • Advanced rendering techniques for producing specular smooth surfaces in polygon-based high-definition computer holography

    H. Nishi(D), K. Matsushima, S. Nakahara

    Practical Holography XXVI: Materials and Applications  2012.1 

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    Venue:San Francisco  

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  • Image-type high-definition CGHs encoded by optimized error diffusion

    H. Yamashita(D), K. Matsushima, S. Nakahara

    Practical Holography XXVI: Materials and Applications  2012.1 

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    Venue:San Francisco  

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  • GPU支援ライブラリを用いた準リアルタイム波動光学シミュレーション

    寺口 功(D), 松島恭治

    Optics&Photonics Japan 2011 講演予稿集  2011.11 

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  • 光源多重方式時分割電子ホログラフィによる水平視域角の拡大

    松田篤史(D), 寺口 功(D), 松島恭治

    Optics&Photonics Japan 2011 講演予稿集  2011.11 

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  • ポリゴン法CGHにおける散乱性位相の細分化を用いた鏡面性表面のスムーズシェーディング

    西 寛仁(D), 松島恭治, 中原住雄

    Optics&Photonics Japan 2011 講演予稿集  2011.11 

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  • High-Definition Image CGH Created by the Polygon-Based Method and its Reconstruction by White Light Invited

    H. Yamashita(D, K. Matsushima, S. Nakahara

    2011.11 

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    Venue:Utsunomiya  

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  • Computer Holography: 3D Imaging of Virtual and Real Objects

    K. Matsushima, H. Nishi(D), Y. Arima(D), S. Nakahara

    International Workshop on Holography and related technologies 2011 (IWH2011)  2011.11 

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    Venue:Utsunomiya  

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  • ポリゴン法CGHにおける透明物体のレンダリングの基礎研究

    西 寛仁(D), 松島恭治, 中原住雄

    映像情報メディア学会技術報告  2011.10 

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  • LD光源のスイッチングにより視域角を拡大した時分割電子ホログラフィ, 映像情報メディア学会技術報告

    松田篤史(D), 寺口 功(D), 松島恭治

    映像情報メディア学会技術報告  2011.10 

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  • 自由空間における光波伝搬計算手法とその応用

    松島恭治

    第12回情報フォトニクス研究グループ研究会講演予稿集  2011.9 

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  • ポリゴン法によるイメージ型超高解像度CGHの合成と白色再生

    山下裕士(D), 松島恭治, 中原住雄

    HODIC Circular  2011.9 

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  • 分散並列処理によるポリゴン法超高解像度CGH生成の高速化と大規模化

    小川晃平(D), 東 健太郎(D), 松島恭治, 中原住雄

    HODIC Circular  2011.9 

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  • 最適化誤差拡散法を用いたイメージ型超高解像度CGHの合成

    山下裕士(D), 有馬恭旭(D), 中村将樹(D), 松島恭治, 中原住雄

    3次元画像コンファレンス2011講演論文集  2011.7 

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  • 全方向視差CGH におけるポリゴン単位の高速隠面消去法

    中村将樹(D), 松島恭治, 中原住雄

    3次元画像コンファレンス2011講演論文集  2011.7 

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  • デジタル化ホログラフィによる実在物体と仮想物体の混合3次元再生

    有馬恭旭(D), 松島恭治, 中原住雄

    3次元画像コンファレンス2011講演論文集  2011.7 

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  • 山岳風景を再生する高解像度CGHの分散処理による合成

    東 健太郎(D), 小川晃平(D), 西 寛仁(D), 松島恭治, 中原住雄

    3次元画像コンファレンス2011講演論文集  2011.7 

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  • ポリゴン法CGHにおける鏡面性曲面のレンダリング法

    西 寛仁(D), 松島恭治, 中原住雄

    3次元画像コンファレンス2011講演論文集  2011.7 

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  • 光源多重方式時分割電子ホログラフィ

    松田篤史(D), 寺口 功(D), 松島恭治

    3次元画像コンファレンス2011講演論文集  2011.7 

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  • GPU支援波動光学シミュレーションライブラリ: CudaWaveField

    寺口 功(D), 松島恭治

    第5回新画像システム・情報フォトニクス研究討論会講演予稿集  2011.6 

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  • 体積型ホログラムパターンを描画可能な波面プリンタの開発

    春口弘喜(D), 松島恭治

    第5回新画像システム・情報フォトニクス研究討論会講演予稿集  2011.6 

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  • Smooth Shading of Specular Surfaces in Polygon-Based High-Definition CGH

    H. Nishi(D), K. Matsushima, S. Nakahara

    3DTV-Conference 2011  2011.5 

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    Venue:Antalya, Turkey  

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  • Spatial 3D Imaging by Synthetic and Digitized Holography

    Y. Arima(D), K. Matsushima, S. Nakahara

    3DTV-Conference 2011  2011.5 

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    Venue:Antalya, Turkey  

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  • A Novel Method for Rendering Specular and Smooth Surfaces in Polygon-Based High-Definition CGH

    H. Nishi(D), Y. Arima(D), S. Nakahara

    OSA Topical Meeting on Digital Holography and Three-Dimensional Imaging 2011  2011.5 

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    Venue:Tokyo  

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  • Hybrid CGH by Digitized Holography: CGH for Mixed 3D Scene of Virtual and Real Objects

    Y. Arima(D), K. Matsushima, S. Nakahara

    OSA Topical Meeting on Digital Holography and Three-Dimensional Imaging 2011  2011.5 

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    Venue:Tokyo  

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  • Digitized Holography: Spatial 3D Imaging of Virtual and Real Objects Invited

    K. Matsushima, Y. Arima(D, S. Nakahara

    SPIE Defense, Security + Sensing 2011  2011.4 

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    Venue:Orland  

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  • ポリゴン法CGHにおける鏡面性表面のスムーズシェーディング

    西 寛仁(D), 松島恭治, 中原住雄

    映情学技報 Vol. 35  2011.3 

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  • Computer Holography as a New Digital Art Invited

    Kyoji MATSUSHIMA

    2011.2 

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  • New techniques for wave-field rendering of polygon-based high-definition CGHs

    H. Nishi(D), K. Higashi(D), Y. Arima(D), K. Matsushima, S. Nakahara

    Practical Holography XXV: Materials and Applications  2011.1 

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    Venue:San Francisco  

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  • Spatial Imaging Based on Extremely High-Definition Computational Holography - Wave-Field Oriented 3D imaging - Invited

    K. Matsushima

    17th International Display Workshop (IDW '10)  2010.12 

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    Venue:Fukuoka  

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  • Impact of Spatial 3D Imaging by Extremely High-Definition Computational Holography - Wave-Field Oriented 3D imaging -

    K. Matsushima, H. Nishi(D), Y. Arima(D), K. Higashi(D), M. Nakamura, S. Nakahara

    17th International Display Workshop (IDW '10)  2010.12 

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    Venue:Fukuoka  

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  • ポリゴン法CGHにおける拡散位相のスペクトル制御による鏡面性表面の再生

    西 寛仁(D), 松島恭治

    Optics&Photonics Japan 2010 講演予稿集  2010.11 

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  • 合成開口デジタルホログラフィで記録した実在の物体とCGモデル仮想物体によるハイブリッドCG

    有馬恭旭(D), 西 寛仁(D), 松島恭治, 中原住雄

    Optics&Photonics Japan 2010 講演予稿集  2010.11 

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  • 波動光学シミュレーションツールキット:WaveField Tools

    松島恭治

    Optics&Photonics Japan 2010 講演予稿集  2010.11 

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  • Wave-Field Rendering in Computational Holography - The polygon-based method for Full-Parallax High-Definition CGHs Invited

    K. Matsushima

    9th IEEE/ACIS International Conference on Computer and Information Science (ICIS2010)  2010.8 

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    Venue:Yamagata  

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  • GPUを用いたポリゴン法計算機合成ホログラムの計算, 3次元画像コンファレンス2010講演論文集

    寺口 功(D), 松島恭治

    3次元画像コンファレンス2010講演論文集  2010.7 

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  • キノフォームタイプ電子ホログラフィにおけるキャリア信号の導入とsinc補正

    松田篤史(D), 細川俊彰(D), 松島恭治

    3次元画像コンファレンス2010講演論文集  2010.7 

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  • ポリゴンベース超高解像度CGHにおけるレンダリング手法 ―ウェーブフィールド・レンダリング―

    松島恭治, 西 寛仁(D), 中原住雄

    3次元画像コンファレンス2010講演論文集  2010.7 

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  • スパースな3D シーンを有する超高解像度CGHにおける隠面消去の高速化

    中村将樹(D), 松島恭治, 中原住雄

    3次元画像コンファレンス2010講演論文集  2010.7 

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  • Computational Holography: Real 3D by Fast Wave-Field Rendering in Ultra-High Resolution

    K. Matsushima, M. Nakamura(D), S. Nakahara, I. Kanaya(Osaka Univ.)

    SIGGRAPH 2010  2010.7 

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    Venue:Los Angeles  

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  • ポリゴンベースCGHにおけるサーフェースレンダリング

    西 寛仁(D), 松島恭治, 中原住雄

    第4回新画像システム・情報フォトニクス研究討論会講演予稿集  2010.6 

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  • GPUを用いたポリゴンベースCGHの光波数値合成

    寺口 功(D), 松島恭治

    第4回新画像システム・情報フォトニクス研究討論会講演予稿集  2010.6 

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  • Novel Techniques Introduced into Polygon-Based High-Definition CGHs

    K. Matsushima, M. Nakamura(D), S. Nakahara

    OSA Topical Meeting on Digital Holography and Three-Dimensional Imaging 2010  2010.4 

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    Venue:Miami  

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  • Spatial Images Reconstructed by Large-Scale Computer-Generated Holograms

    K. Matsushima

    2010.2 

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  • High-definition full-parallax CGHs created by using the polygon-based method and the shifted angular spectrum method

    K. Matsushima, S. Nakahara

    Practical Holography XXIV: Materials and Applications  2010.1 

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    Venue:San Francisco  

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  • High-definition display CGHs calculated by the polygon method and the shifted angular spectrum method

    K. Matsuhsima, S. Nakahara

    2009.11 

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  • Single-shot digital holography by using an arbitrary phase-shifting formula

    Y. Takahama, K. Matsushima

    2009.11 

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  • The shifted angular spectrum method for simulation of free space propagation of wave fields

    K. Matsushima

    2009.11 

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  • Improvements of reconstruction of an electronic Kinoform encoded by error-diffusion using optimized coefficients

    T. Hosokawa, K. Matsushima

    2009.11 

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  • Wave-Optical Techniques for CGH Computation by the Polygon-Based Method — On a Novel Technique of the Shifted Angular Spectrum Method for Off-Axis Numerical Propagation —

    K. Matsushima

    2009.10 

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  • A High-Definition Full-Parallax CGH Createdby the Polygon-Based Method

    MATSUSIMA Kyoji, NAKAHARA Sumio

    OSA Topical Meeting on Digital Holography and Three-Dimensional Imaging 2009  2009.4 

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  • Region Segmentation and Parallel Processing for Creating Large-Scale CGHs in Polygon Source Method

    MATSUSHIMA Kyoji, S. Nakahara, NAKAHARA Sumio

    Practical Holography XXIII: Materials and Applications  2009.1 

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    Venue:San Jose  

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  • ディジタルホログラフィと回転変換による物体面の角度と位置の同時計測

    岩村俊哉, 梅原英明, 松島恭治

    Optics Photonics Japan 2008 講演予稿集  2008.11 

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  • 高速畳み込みを用いた伝搬回折計算における帯域制限と可変ピッチ角スペクトル法の検討

    松島恭治

    Optics Photonics Japan 2008 講演予稿集  2008.11 

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  • 合成開口ディジタルホログラフィの3次元画像応用

    松島恭治

    平成19年度日本光学会関西講演会(応用光学懇談会第135回講演会)  2007.11 

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  • 合成開口ディジタルホログラフィによる広視域3次元画像情報の取得と数値再生

    中辻達也, 南 雄大, 松島恭治

    3次元画像コンファレンス2007講演論文集  2007.7 

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  • レーザー直接描画装置で作製した大規模で高品質な全方向視差計算機合成ホログラム

    松島恭治, 中原住雄, 大島勇樹, 池元 直, 中辻達也

    3次元画像コンファレンス2007講演論文集  2007.7 

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  • Rotational Transformation for Reconstruction of Digital Holography and CGH Creation

    MATSUSHIMA Kyoji

    OSA Topical Meeting on Digital Holography and Three-Dimensional Imaging 2007  2007.6 

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    Venue:Vancouver  

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  • Acquisition of Information-Rich Images Using Synthetic-Aperture Digital Holography

    MATSUSHIMA Kyoji, T. Nakatsuji

    OSA Topical Meeting on Digital Holography and Three-Dimensional Imaging 2007  2007.6 

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    Venue:Vancouver  

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  • ドット描画式ドラム型フリンジプリンタのフォーカス制御

    小林俊輔, 圓山泰佑, 松島恭治

    2007年電子情報通信学会総合大会  2007.3 

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  • 合成開口ディジタルホログラムの数値再生―視点移動像と斜面像―

    中辻達也, 小林俊之, 南 雄大, 松島恭治

    2007年電子情報通信学会総合大会  2007.3 

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  • 画家のアルゴリズムによる隠面消去を用いた全方向視差計算機合成ホログラム

    大島勇樹, 佐伯優一, 中原住雄, 松島恭治

    2007年電子情報通信学会総合大会  2007.3 

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  • フォトポリマーを用いた白色光再生可能な反射型計算機合成ホログラム

    福田聡士, 大井康弘, 松島恭治

    2007年電子情報通信学会総合大会  2007.3 

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  • レーザ直接描画装置で作製した大規模で高品質な全方向視差計算機合成ホログラム

    松島恭治, 中原住雄, 大島祐樹D, 池元 直, 中辻達也

    3次元画像コンファレンス2007  2007 

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  • Fabrication of DOE Using Laser Direct Write Lithography System

    Sumio Nakahara, Naoshi Ikemoto, Kyoji Matsushima, Shigeyoshi Hisada, Shoso Shingubara, Takeyoshi Fujita

    The 8th International Symposium on Laser Precision Microfabrication:(LPM2008)  2007 

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    Venue:Vienna, Austria  

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  • 合成開口ディジタルホログラフィによる広視野・広視域3次元画像情報の取得

    中辻達也, 松島恭治

    Optics Photonics Japan 2006講演予稿集  2006.11 

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  • ドット描画式ドラム型フリンジプリンタの高精度化

    小林俊輔, 松島恭治

    平成18年電気関係学会関西支部連合大会  2006.11 

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  • CGHにおける画家のアルゴリズムを用いた隠面消去のためのポリゴンのソート

    大島勇樹, 松島恭治

    平成18年電気関係学会関西支部連合大会  2006.11 

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  • 計算機合成ホログラムにおけるポリゴン光源を用いた物体光波の合成

    松島恭治

    平成18年電気関係学会関西支部連合大会  2006.11 

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  • Performance of the Polygon-Source Method for Creating Computer-Generated Holograms of Surface Objects

    MATSUSHIMA Kyoji

    ICO Topical Meeting on Optoinfomatics/Information Photonics 2006 (St. Petersburg, Russia)  2006.9 

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  • Development of the surface diffraction method for computer-generated display holograms

    MATSUSHIMA Kyoji

    7th International Symposium on Display Holography (North Wales, United Kingdom)  2006.7 

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  • 位相シフトレンズレスフーリエディジタルホログラフィによる広視野3次元画像情報の取得

    中辻達也, 長岡 努, 松島恭治

    3次元画像コンファレンス2006講演論文集  2006.7 

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  • 相シフトを用いたレンズレスフーリエ変換ディジタルホログラフィ

    中辻達也, 長岡 努, 松島恭治

    2006年電子情報通信学会総合大会  2006.3 

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  • A High-Resolution Fringe Printer for Studying Synthetic Holograms

    MATSUSHIMA Kyoji, S. Kobayashi, H. Miyauchi

    Practical Holography XX: Materials and Applications(San Jose, USA)  2006.1 

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  • ドット描画式ドラム型フリンジプリンタの開発

    小林俊輔, 宮内宏之, 松島恭治

    平成17年第3回ホログラフィック・ディスプレイ研究会  2005.11 

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    Venue:関西大学  

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  • 反復回折法とHIO アルゴリズムを組み合わせたフレネル型ビーム成形用回折光学素子の設計

    坂上広樹, 松島恭治

    Optics Japan 2005 講演予稿集  2005.11 

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  • Exact Hidden-Surface Removal in Digitally Synthetic Full-Parallax Holograms

    MATSUSHIMA Kyoji

    Practical Holography XIX and Holographic Materials XI (San Jose, USA)  2005 

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  • レンズレスフーリエ変換デジタルホログラフィによる三次元画像の広視野記録

    長岡努, 冨士川正樹, 松島恭治

    2005年電子情報通信学会総合大会  2005 

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  • 全方向視差デジタル合成ホログラムにおける完全かつ高速な隠面消去法

    松島 恭治

    3次元画像コンファレンス2005講演論文集  2005 

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  • 表面光波回折法によるデジタル合成ホログラムの進展―全方向視差ホログラムのリアルタイムレンダリングを目指して―

    松島恭治

    平成16年第2回ホログラフィック・ディスプレイ研究会  2004.9 

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  • 表面光波回折法によるデジタル合成ホログラムの進展―全方向視差ホログラムのリアル タイムレンダリングを目指して―

    松島恭治

    平成16年第2回ホログラフィック・ディスプレイ研究会  2004.9 

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  • Holographic Three-Dimensional Display for Medical Image

    Y. Sakamoto, MATSUSHIMA Kyoji, A. Myojoyama

    2004 ICO Intern. Conf. Optics&Photonics in Technology Frontier (Tokyo, Japan)  2004.7 

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  • Fast Creation of Digitally Synthetic Holograms of Surface Objects by use of a Wave-Optical Method

    MATSUSHIMA Kyoji

    2004 ICO Intern. Conf. Optics&Photonics in Technology Frontier (Tokyo, Japan)  2004.7 

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  • デジタル合成ホログラム描画用フリンジプリンタ

    宮内宏之, 山中俊介, 栗林佑宇真, 松島恭治

    3次元画像コンファレンス2004講演論文集  2004.6 

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  • 計算機合成ホログラムの手法で設計した任意形状ビーム成形用回折光学素子

    松島恭治, 森村隆, 平井隆之, 布施敬司, 栗巣賢, 江畑惠司

    第29回光学シンポジウム講演予稿集  2004.6 

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  • 3次元医療画像の計算機合成ホログラムによる立体表示

    坂本雄児, 松島恭治, 明上山温

    3次元画像コンファレンス2004講演論文集  2004.6 

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  • Characteristic of Diffractive Optical Element for Arbitrary Pattern Beam Shaping

    T. Hirai, K. Fuse, K. Ebata, K. Kurisu, MATSUSHIMA Kyoji

    5th International Symposium on Laser Precision Microfabrication -SCIENCE AND APPLICATIONS- (Nara, Japan)  2004.5 

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  • フリンジプリンタにより作成したディスプレイ用CGH

    栗林佑宇真, 宮内宏之, 山中俊介, 松島恭治

    Optics Japan2004 講演予稿集  2004 

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  • フリンジプリンタにより作成したディスプレイ用 CGH

    栗林佑宇真, 宮内宏之, 山中俊介, 松島恭治

    Optics Japan2004 講演予稿集  2004 

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  • 遺伝的アルゴリズムを用いた回折型ビームシェーパー設計パラメータの最適化

    天野弘章, 森村 隆, 平田博之, 松島恭治

    Optics Japan2004 講演予稿集  2004 

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  • オブジェクト指向波動光学シミュレーションライブラリ―Light Wave

    松島恭治

    Optics Japan2004 講演予稿集  2004 

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  • ディスプレイCGHにおける厳密な波動光学的隠面消去

    松島恭治

    Optics Japan2004 講演予稿集  2004 

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  • A Wave Optical Algorithm for Hidden-Surface Removal in Digitally Synthetic Full-Parallax Holograms for Three-Dimensional Objects

    MATSUSHIMA Kyoji, A.kondoh

    Practical Holography XVIII and Holographic Materials X (San Jose, USA)  2004 

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  • Wave Optical Algorithm for Creating Digitally Synthetic Holograms of Three-Dimensional Surface Objects

    MATSUSHIMA Kyoji, A.kondoh

    Practical Holography XVII and Holographic Materials IX (Santa Clara, USA)  2003 

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  • Propagation of electromagnetic fields between non-parallel planes, SPIE International Symposium on Optical Science and Technology

    MATSUSHIMA Kyoji, A.kondoh

    SPIE International Symposium on Optical Science and Technology (San Diego, USA)  2003 

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  • New Creation Algorithm for Digitally Synthesized Holograms in Surface Model by Diffraction from Tilted Planes

    MATSUSHIMA Kyoji, H. Schimmel, F. Wyrowski

    2002 

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Industrial property rights

  • ホログラム表示装置を作製する方法、及びホログラム表示装置の作製装置

    松島恭治, 土山泰裕

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    Application no:特願2020-114982  Date applied:2020.7

    Announcement no:特開2020-166300  Date announced:2020.10

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  • フルカラー高解像度計算機合成ホログラム表示装置、その作製方法及びその作製装置

    松島恭治, 土山泰裕

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    Application no:特願2016-121830  Date applied:2016.6

    Patent/Registration no:特許第6762056号  Date registered:2020.9 

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  • ホログラフィ表示装置

    松島恭治, 東野好伸

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    Application no:特願2016-121830  Date applied:2016.6

    Announcement no:特開2017-227677  Date announced:2017.12

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  • フルカラー高解像度計算機合成ホログラム表示装置及びその作製方法

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    Application no:特願2015-130267  Date applied:2015.6

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  • 回折光学部品およびその設計方法

    森村隆, 松島恭治, 布施敬司, 平井隆之

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    Application no:特願2005-044063号  Date applied:2005.2

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  • 位相変調型ホログラムの作製方法

    松島恭治, 横山和典, 松尾孝, 雑賀哲行

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    Application no:特願2003-309517  Date applied:2003.9

    Patent/Registration no:特許第4535422号  Date registered:2010.6  Date issued:2010.6

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Awards

  • 3D imaging conference outstanding paper award

    2022.7   Animation of Full-Parallax High-Definition CGH by Mapping of Structured Illumination

    Kyoji Matsushima, Takashi Konaka, Ryo Morikawa

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  • 3D imaging conference outstanding paper award

    2017.7   Creation of High-Definition Computer-Generated Holograms of Real Objects by Employing the Ray-Sampling Plane Method

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  • Outstanding Poster Paper Award

    2017.3   Information Photonics 2017   Rendering of transparent objects in polygon-based computer holography

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  • 3D imaging conference outstanding paper award

    2013.7   Creation of High-Definition Computer-Generated Holograms Arranged Multiple-Viewpoint Images in 3D Scenes

    Yutaka Yoshizaki, Kyoji Matsushima, Sumio Nakahara

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    Country:Japan

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  • 2012年度(第3回)HODIC鈴木・岡田記念賞(技術部門賞)

    2013.5   HODIC研究会  

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    Country:Japan

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  • 2013 Charles E. Ives Journal Award

    2013.5   Society of Imaging Science & Technology  

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  • 2003年度(第10回)HODIC鈴木・岡田賞(技術部門奨励賞)

    2004.5   HODIC研究会  

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    Country:Japan

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  • 3次元画像コンファレンス2001優秀論文賞

    2002.7   3次元画像コンファレンス実行委員会  

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    Country:Japan

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  • 電気関係学会関西支部連合大会奨励賞

    1992   電気関係学会関西支部連合大会  

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    Country:Japan

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Research Projects

  • Establishment of technology platform for innovative 3D signage with extremely high-definition computer holography

    Grant number:22H03712  2022.4 - 2025.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Grant amount:\10400000 ( Direct Cost: \8000000 、 Indirect Cost:\2400000 )

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  • Establishment of basic technology of large-size full-color static 3D display by computer holography

    Grant number:18H03349  2018.4 - 2021.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    MATSUSHIMA Kyoji

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    Grant amount:\7020000 ( Direct Cost: \5400000 、 Indirect Cost:\1620000 )

    Computer holography is a technique that makes it possible to create the ultimate 3D image reconstructing stunningly deep 3D scenes. This research project mainly focusses on the techniques to create and reconstruct full-color 3D images in this computer holography, and, in addition, developed various related techniques. In particular, we developed a novel technique, called ‘Stacked CGVH’, for producing full-color holograms and confirmed that the technique reconstructed much better 3D images than those based on the conventional RGB color filters technique. Furthermore, to remove obstructive light that disturbs view of 3D images, several other techniques such as phase modulation, fringe oversampling techniques, and a back-light system for illumination were developed in the project. Techniques developed through the project allow us to create 3D images that are easy to view and have high quality in computer holography.

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  • 革新的照明一体型カラーホログラム表示システム

    2017.10 - 2018.9

    科学技術振興機構  地域産学バリュープログラム 

    松島 恭治

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  • Creation of full-color 3D images by computer holography

    Grant number:15K00512  2015.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    MATSUSHIMA KYOJI, HIGASHINO YOSHINOBU, SONOBE NORIAKI, TSUCHIYAMA YASUHIRO, NAKATSUJI NORIAKI, SAITO TOMOTAKA, TSUCHIOKA TOMOAKI, NAKAO HIROKI, IGARASHI YUSUKE, NAKASE YUKI, ISHIGAMI TOMOYA, NISHIKAWA RYO, MASUJI SYOYA, MATSUZAKI SYOTA, II MIHO

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    Grant amount:\4680000 ( Direct Cost: \3600000 、 Indirect Cost:\1080000 )

    A novel technique for full-color computer-generated holograms (CGH) is developed for actual exhibition of full-color 3D images. In this technique, RGB color filters are attached closely to a fringe pattern printed by laser lithography. Since the fringe pattern behind the RGB color filters is generated at a wavelength corresponding to the RGB color, viewers can see a full-color 3D image without any severe color smear. In addition, application software is developed for non-experts of computer holography to design and calculate full-color CGHs. The technique of full-color digitized holography is also developed to make full-color CGHs that reconstruct a 3D scene including physical real-existing objects as well as CG-modeled virtual objects. In this technique, the object field of a subject is recorded at three wavelengths using synthetic aperture digital holography.

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  • Fabrication of giga size CGH for large scale holographic display using tiling system

    Grant number:26540191  2014.4 - 2015.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    NAKAHARA Sumio, MATSUSHIMA Kyoji

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    Grant amount:\3640000 ( Direct Cost: \2800000 、 Indirect Cost:\840000 )

    We are developing the fabrication technology of hologram optical elements which is possible about the reconstruction of the true three-dimensional image. In the holography technology, a computer hologram is obtained. Using a laser lithography system, the pattern of the computed interference fringe is exposed directly on the photomask substrate. We are able to fabricate holograms by exposing a computed fringe pattern by the lithography system and etching to the chromium thin film after developing of photoresist. For wide view area, we used a tiling system of holograms with several meters. By the technique of the heat mode lithography, the pixel pattern of the sub-wavelength was exposed on the photoresist substrate. Based on the interference fringe pattern of the 800 nm pixel pitch, using the reduction exposure technique, we fabricated a hologram of the pixel pitch of the submicron like 320 nm with 80 degree of wide viewing angle.

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  • コンピュータホログラフィ技術を中心とした超大規模データ処理指向コミュニケーション

    2013.4 - 2018.3

    文部科学省  私立大学戦略的研究基盤形成支援事業 

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  • Building up technology infrastructures in computer holography

    Grant number:24500133  2012.4 - 2015.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    MATSUSHIMA Kyoji, NAKAHARA Sumio

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    Grant amount:\5200000 ( Direct Cost: \4000000 、 Indirect Cost:\1200000 )

    Researches into high-definition computer-generated holograms (CGH) were carried out for the purpose of building up technology infrastructures in computer holography. Several techniques are developed in this research, which include full-color optical reconstruction using dichroic mirrors, high-definition CGH produced from multi-viewpoint images, a technique for digital resizing of object field captured by synthetic-aperture digital holography, and software tools intended for designers and artists who are not experts in holography. As a result, a high-definition CGH composed of 25 billion pixels was fabricated and had been on display at Massachusetts Institute of Technology (MIT) Museum in USA for approximately three years.

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  • 超高解像度計算機合成ホログラムによる3D表示

    2010.4 - 2011.3

    科学技術振興機構  研究成果最適展開支援事業A-STEP 探索タイプ 

    松島 恭治

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  • Development of polygon-based method for fast creation of large-scaled computer-generated holograms

    Grant number:21500114  2009 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    MATSUSHIMA Kyoji, NAKAHARA Sumio

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    Grant amount:\4420000 ( Direct Cost: \3400000 、 Indirect Cost:\1020000 )

    Some important techniques, such as parallel/segmented computing, specular rendering, hidden surface removal, are developed for creating large-scaled computer-generated holograms by polygon-based methods. A hologram composed of 25 billion pixels, whose size is approximately 13.11cm^2 and viewing angle is more than 45°, is created in the top data. This hologram reconstructs true fine 3D images with a strong sensation of depth, which has never been achieved by conventional 3D systems, and therefore has been selected as a special exhibition taking place in MIT museum(Cambridge, USA).

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  • 3Dモデルベースの動画ホログラム再生に関する研究

    2005 - 2007

    3

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    Grant type:Competitive

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  • 2波長対応光分岐CGHの光学設計のためのソルバー開発

    2005 - 2006

    3

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    Grant type:Competitive

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  • Development of Effective Photo-Polymer Optical Element by Contact Exposure by a Mask Synthesized as CGH

    2004 - 2007

    3

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    Grant type:Competitive

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  • A Simulation of Diffractive Optical Elements

    2004 - 2005

    3

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    Grant type:Competitive

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  • Study on 3D displaying for volume data using holographic 3D display

    Grant number:15300025  2003 - 2005

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    SAKAMOTO Yuji, MATSUSHIMA Kyoji, KIMURA Koichi, MYOUJYOUYAMA Atsushi

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    Grant amount:\16700000 ( Direct Cost: \16700000 )

    1.Objectives
    Purpose of this study is to develop holographic 3D display system for volume data using a computer-generated hologram technique and to evaluate the 3D images.
    2.Results of research
    (1)We succeeded in displaying a three-dimensional image by a hologram of volume data and were able to realize a large-sized hologram in comparison with before. New knowledge was provided through this development technically. In addition, I clarified the effectiveness of the method by the large-size holograms that are able to see by naked eyes. However, on the other hand, the problems such as quantization and calculation algorithm, which we must study in future, became clear newly. The results of research were able to become a touchstone for practical use.
    (2)We have developed a total 3D displaying system for medical images : (i)volume data are scanned at Tokyo Metropolitan Univ., (ii)transmitted to Hokkaido Univ. though the internet, (iii)calculated for hologram data, (iv)transmitted to Kanasai Univ., and (v)printed on photo plates.
    (3)In addition, in the field of each study, we were able to achieve the following results :
    (i)New rendering algorithms for computer-generated hologram that are useful for realistic imaging,
    (ii)New segmentation methods for organs and image processing methods,
    (iii)A new fringe printer that is large size and high resolution,
    (iv)New 3D image compression metods.

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  • Design of Diffractive Optical Elements for Laser Processing

    2001 - 2007

    3

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    Grant type:Competitive

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  • Fundamental and applied research of S phase

    Grant number:10045054  1998 - 2000

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B).

    AKAMATSU Katsuya, NISHIMOTO Akio, ICHII Kazuo, TAKAI Masahiro

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    Grant amount:\7000000 ( Direct Cost: \7000000 )

    1.Introduction :
    The S phase of M_4N type nitride found from the research of the processing of the plasma nitriding of the stainless steels in 1986 has been being researched internationally from the possession of the character of a high corrosion resistance and high hardness.
    To correct current results of the research of S phase, to collect latest research information on S phase and to hold an international seminar in Kansai University, to make the result public widely, and to contribute to pubic development of the 21^<st> century, this research was done as The Birmingham University in Britain which was the agreement university of Kansai University and an intercollegiate cooperation research.
    2.Document investigation on S phase :
    Since the S phase generates when stainless steels are chiefly in ion-nitriding. Document investigation was done on[Metals Abstracts]as the key words for[Ion Nitriding]and [Austenitic Stainless Steel]from 1977 to 2000. 157 papers(only English)were resulted as the theses related to the above-mentioned. They were contributed to following SS2000 Proceedings.(publication from The Institute of Materials)
    3.Research Investigation on S phase :
    The under-mentioned results was announced to SS2000, and each thesis was contributed to Proceedings SS2000.
    1) Effect of Mechanical Pre-Treatment on the Formation of S phase in Plasma Nitrided 304 Austenitic Stainless Steel.
    2) "S" phase formation of Some Austenitic Stainless Steels by Ion-Nitriding.
    3) Nitriding of Stainless Steel Using High Power YAG laser.
    4. Domestic and International seminar on SS2000 :
    There were the participates of 61 persons(47 country persons and 14 foreigner), and abstracts papers of 25(9 country and 24 foreign countries)on this seminar. Moreover, a domestic seminar on concerning fundamental and application of S phase was held in Kansai University on 24 September 1999. There were four lectures and 70 participants.

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Devising educational methods

  • 「基礎プログラミング実習」 パワーポイントによる授業を行い、大学院生の補助員による受講生個別のレポート添削指導を行っている。また、レポート以外に小テスト4回、期末テスト1回の受験を課しており、これらによりプログラミングの基礎能力を養成している。内容はWebページで公開。 「コンピュータグラフィックス」 パワーポイントによる授業を行い、毎回のレポート提出、中間試験、期末試験以外に、最終課題として修了作品の提出を求めている。科目の性質上、単に知識の習得だけではなく、自ら創作することを課している。 「光エレクトロニクス」 座学であるが、受講生がノート取りに集中することなく内容理解を優先できるよう、毎回レジメを配布して各自のノートをそれに書き込ませている。 「応用情報工学実験(CPUの基礎実験)」 パワーポイントによる授業をまず行い、さらに全員が課題を解決しそれぞれが実験を行えるように工夫している。

Teaching materials

  • 「基礎プログラミング実習」 授業資料・教材を執筆し、専用Webサイトで公開・配布している。 「コンピュータグラフィックス」 授業資料・教材を執筆し、CEASで配布している。 「光エレクトロニクス」 授業資料・教材を執筆し、インフォメーションシステムで配布している。 「応用情報工学実験-CPUの基礎実験」 実験テキストを執筆し、また独自に開発したエミュレータプログラムを配布している。このエミュレータプログラムはWindowsアプリケーションとして動作し、GUIを用いてCPUの動作をワンステップずつ理解できるように作成されている。

Teaching method presentations

  •  特になし

Special notes on other educational activities

  • 高大連携の一環として「基礎プログラミング」の授業を高校生に公開している。 レポート添削や小テストを含めて、大学生と全く同じ内容の授業を履修することができる。