Updated on 2024/04/06

写真a

 
NISHI,Hirohito
 
Organization
Faculty of Engineering Science Assistant Professor
Title
Assistant Professor
External link

Research Interests

  • CGH

  • DOE

  • Holography

  • Wave optics

Research Areas

  • Nanotechnology/Materials / Thin film/surface and interfacial physical properties  / 光学薄膜

  • Nanotechnology/Materials / Optical engineering and photon science  / ホログラフィ

  • Nanotechnology/Materials / Optical engineering and photon science  / 回折光学素子

  • Informatics / High performance computing  / 波動光学解析

  • Informatics / Entertainment and game informatics  / ホログラフィックディスプレイ

Education

  • Kansai University

    2015.4 - 2018.9

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    Country: Japan

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  • Kansai University

    2010.4 - 2012.3

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    Country: Japan

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  • Kansai University   Faculty of Engineering Science

    2006.4 - 2010.3

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Research History

  • Kansai University   Assistant Professor

    2022.4

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  • 住友電気工業株式会社

    2012.4 - 2022.3

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Professional Memberships

Papers

  • Tiling technique for expanding stacked CGVH in full-color high-definition computer holography Reviewed

    S. Fujiki, H. Nishi, K. Matsushima

    Practical Holography XXXVIII: Materials and Applications   2024.1

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

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  • Increase in size of full-color stacked CGVH by tiling contact-copy

    S. Fujiki, H. Nishi, K. Matsushima

    International Display Workshop 2023 (IDW'23): 3D Systems and Applications 2023 (3DSA2023)   1313 - 1316   2023.12

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    Publishing type:Research paper (international conference proceedings)  

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  • Denisyuk-type wavefront printer developed for printing large-scale display CGVH Reviewed

    Y. Takemura, H. Nishi, K. Matsushima

    International Display Workshop 2023 (IDW'23): 3D Systems and Applications 2023 (3DSA2023)   1304 - 1306   2023.12

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

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

    Hirohito Nishi, Kyoji Matsushima

    Applied Optics   56 ( 13 )   F37 - F37   2017.2

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   Publisher:The Optical Society  

    DOI: 10.1364/ao.56.000f37

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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

    Journal of Physics: Conference Series   415   012053 - 012053   2013.2

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    Publishing type:Research paper (scientific journal)   Publisher:IOP Publishing  

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

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    Other Link: http://stacks.iop.org/1742-6596/415/i=1/a=012053?key=crossref.1b7cabe04269ebde3e44b01df3d3a7ac

  • 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 )   1 - 1   2012.4

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    Publishing type:Research paper (scientific journal)   Publisher:SPIE-Intl Soc Optical Eng  

    DOI: 10.1117/1.jei.21.2.023002

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

    Hirohito Nishi, Sumio Nakahara, Kyoji Matsushima

    Practical Holography XXVI: Materials and Applications   2012.2

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    Authorship:Lead author   Publishing type:Research paper (international conference proceedings)   Publisher:SPIE  

    DOI: 10.1117/12.908871

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

    Hirohito Nishi, Kyoji Matsushima, Sumio Nakahara

    Applied Optics   50 ( 34 )   H245 - H245   2011.12

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   Publisher:The Optical Society  

    DOI: 10.1364/ao.50.00h245

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

    Hirohito Nishi, Kyoji Matsushima, Sumio Nakahara

    2011 3DTV CONFERENCE: THE TRUE VISION - CAPTURE, TRANSMISSION AND DISPLAY OF 3D VIDEO (3DTV-CON)   2011.5

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

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

    SPIE Proceedings   2011.2

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    Authorship:Lead author   Publishing type:Research paper (international conference proceedings)   Publisher:SPIE  

    DOI: 10.1117/12.876362

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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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    Authorship:Lead author   Language:Japanese   Publisher:The Institute of Image Information and Television Engineers  

    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.

    DOI: 10.11485/itetr.35.42.0_27

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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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    Authorship:Lead author   Language:Japanese   Publisher:The Institute of Image Information and Television Engineers  

    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.

    DOI: 10.11485/itetr.35.14.0_77

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

    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   2010.1

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:INST IMAGE INFORMATION & TELEVISION ENGINEERS  

    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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  • 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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    Language:Japanese   Publisher:The Institute of Image Information and Television Engineers  

    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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Presentations

  • フローティング3次元像を再生する反射型計算機合成アルコーブホログラム

    竹林稜平, 西 寛仁, 松島恭治

    HODIC学生シンポジウム2024  2024.2 

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    Event date: 2024.2

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • 高解像度コンピュータホログラフィの社会実装

    松島恭治, 西 寛仁

    第28回関西大学先端科学技術シンポジウム  2024.1 

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    Event date: 2024.1

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  • 空中像を再生するアルコーブ型CGHの作製

    竹林稜平, 西 寛仁, 松島恭治

    第28回関西大学先端科学技術シンポジウム  2024.1 

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    Event date: 2024.1

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  • 積層CGVH方式フルカラー計算機合成 ホログラムにおけるタイリング転写の改良

    藤木駿介, 西 寛仁, 松島恭治

    第28回関西大学先端科学技術シンポジウム  2024.1 

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    Event date: 2024.1

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  • 顔写真1枚からのホログラフィックポートレート作成システム

    池田透海, 西 寛仁, 松島恭治

    第28回関西大学先端科学技術シンポジウム  2024.1 

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    Event date: 2024.1

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  • フルカラー計算機合成ホログラムにおけるフレネル伝搬を用いた大規模な背景画像の計算

    今井 毅, 西 寛仁, 松島恭治

    第28回関西大学先端科学技術シンポジウム 

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    Event date: 2024.1

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  • デニシュク型波面プリンタによる全方向視差高解像度CGVHの描画

    竹村裕貴, 西寛仁, 松島恭治

    ホログラフィック・ディスプレイ研究会  2023.9 

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  • 大型化した積層CGVHによる高品質フルカラー3D映像

    藤木駿介, 西寛仁, 松島恭治

    ホログラフィック・ディスプレイ研究会  2023.9 

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  • 光線サンプリング面を用いた光波計算の波動光学的特性

    桂諒介, 西寛仁, 松島恭治

    ホログラフィック・ディスプレイ研究会  2023.9 

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  • 全方向視差高解像度CGHにおける循環畳み込みを利用した背景画像の拡大

    今井 毅, 西 寛仁, 松島恭治

    3 次元画像コンファレンス 2023  2023.7 

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  • 光線サンプリング面を用いて記録した実物体像を埋め込んだ全方向視差高解像度フルカラーCGH

    パニアグア カルロス, 桂 諒介, 西 寛仁, 松島恭治

    3次元画像コンファレンス2023  2023.7 

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  • 脳動脈瘤カテーテル治療における全方向視差高解像度計算機ホログラムの活用

    清藤哲史, 松島恭治, 金 太一, 西 寛仁, 小泉 聡, 齊藤延人

    3次元画像コンファレンス2023  2023.7 

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  • ホログラフィック AR 効果のための高透過度高解像度 CGH の開発

    西 寛仁, 内田大輝, 松島恭治

    3次元画像コンファレンス2023  2023.7 

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  • Correction Algorithm for Wavelength Mismatch of Sampled Wavefield in Full-Color Computer Holography

    C-J. Lee, H. Nishi, K. Matsushima

    12th International Symposium on Display Holography  2023.6 

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  • Calculation technique for large backdrops filing visual field of full-parallax high-definition CGH

    H.Nishi, K.Matsushima

    12th International Symposium on Display Holography  2023.6 

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    Language:English   Presentation type:Poster presentation  

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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手法 Invited

    西寛仁, 松島恭治

    ホログラフィック・ディスプレイ研究会  2023.6 

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    Presentation type:Oral presentation (invited, special)  

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  • Computation techniques in tera-pixel-scale full-parallax computer holography for 3D display

    K. Matsushima, H. Nishi, R. Katsura, C.-J. Lee

    The 12th Laser Display and Lighting Conference 2023  2023.4 

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  • カラーコンピュータホログラフィにおける波長誤差の補正アルゴリズム

    Lee Changjoo, 西 寛仁, 松島 恭治

    HODIC 学生シンポジウム  2023.2 

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    Presentation type:Oral presentation (general)  

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  • タイリング転写による積層 CGVH 方式フルカラーCGH の作製

    藤木 駿介, 西 寛仁, 松島 恭治

    HODIC 学生シンポジウム  2023.2 

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  • 全方向視差高解像度 CGH アニメーションにおける二分探索による構造化照明の自動マ ッピング

    田村 直樹, 西 寛仁, 松島 恭治

    HODIC 学生シンポジウム  2023.2 

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  • Challenges to tera-pixel-scale full-parallax computer holography for 3D imaging

    K. Matsushima, H. Nishi

    Frontier in Optics + Laser Science 2022  2022.10 

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    Language:English   Presentation type:Oral presentation (invited, special)  

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  • Rendering of transparent objects in large-scale polygon-based computer holography

    H. Nishi, K. Matsushima

    Digital Holography & 3D Imaging 2022  2022.8 

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  • Rendering of transparent objects in polygon-based computer holography

    H. Nishi, K. Matsushima

    Information Photonics 2017  2017.4 

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

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

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

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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, 松島恭治, 中原住雄

    映情学技報 Vol. 35  2011.3 

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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

    2011.1 

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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

    2010.12 

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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, 西 寛仁, 松島恭治, 中原住雄

    Optics&Photonics Japan 2010 講演予稿集  2010.11 

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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, 松島恭治

    Optics&Photonics Japan 2010 講演予稿集  2010.11 

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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, 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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  • 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, 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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Industrial property rights

  • 回折光学装置及びレーザ照射装置

    西寛仁

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    Application no:特願2021-521452 

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Awards

  • Outstanding Poster Paper Award

    2023.12   International Display Workshop 2023   Denisyuk-type wavefront printer developed for printing large-scale display CGVH

    Y. Takemura, H. Nishi, K. Matsushima

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  • 優秀論文賞

    2023.9   3次元画像コンファレンス2023   脳動脈瘤カテーテル治療における全方向視差高解像度計算機ホログラムの活用

    清藤哲史, 松島恭治, 金 太一, 西 寛仁, 小泉 聡, 齊藤延人

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  • 優秀論文賞

    2023.9   3次元画像コンファレンス2023   光線サンプリング面を用いて記録した実物体像を埋め込んだ全方向視差高解像度フルカラー CGH

    パニアグア カルロス, 桂 諒介, 西 寛仁, 松島恭治

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  • Outstanding Poster Paper Award

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

    H. Nishi, K.Matsushima

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  • 2013 Charles E. Ives Journal Award

    2013   Society of Imaging Science & Technology  

    K.Matsushima, S.Nakahara, H.Nishi

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Research Projects

  • フルカラー積層型ホログラムプリンタの開発

    Grant number:24K20911  2024.4 - 2026.3

    日本学術振興会  科学研究費助成事業  若手研究

    西 寛仁

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    Authorship:Principal investigator 

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

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