Real-time reconstruction and high-speed playback of 3D video based on the compressed data of computer-generated hologram
| Project/Area Number |
18K11399
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 61020:Human interface and interaction-related
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| Research Institution | Kochi University |
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Principal Investigator |
Takada Naoki 高知大学, 教育研究部自然科学系理工学部門, 教授 (50290713)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2019: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2018: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | 三次元ディスプレイ / 計算機合成ホログラム / 電子ホログラフィ / 圧縮データ / リアルタイム再生 / マルチGPUクラスタ / GPU / ３次元ディスプレイ / 3次元ディスプレイ |
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| Outline of Final Research Achievements |
Electroholography is expected to become the ultimate three-dimensional (3D) television. However, the computational complexity of the computer-generated hologram (CGH) calculation becomes enormous. The practical use of real-time electroholography requires high-speed CGH calculation. In this study, the compressed CGH data is used as the transferred data and the stored data. We succeeded in high-speed data compression and restoration processes using graphic processing unit (GPU). We also proposed real-time reconstruction of 3D video using a multiple-GPU cluster system with gigabit Ethernet network. We realized real-time clear spatiotemporal division multiplexing electroholographic 3D video of a 3D object comprising approximately 1,200,000 object points, and real-time electroholographic 3D video comprising 184,320 points expressed in eight gradations. Furthermore, we realized a high-speed playback for the electroholographic 3D video stored in a solid-state drive (SSD).
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| Academic Significance and Societal Importance of the Research Achievements |
ホログラフィによる立体像は様々な角度から眺めることができ，視覚疲労もなく長時間利用可能である．電子化したホログラフィ（電子ホログラフィ）は，「究極の三次元テレビ」となるものと考えられている．本研究で開発したGPUによる計算機合成ホログラム（CGH）の高速圧縮・復元技術により，安価で汎用的なコンピュータシステムでCGHの高速再生とCGH計算の高速化が可能となった．また，補助記憶装置に保存したCGHの高速再生技術は，小型化も容易であるためポータブルホログラフィックディスプレイ装置の実現へ繋がる．このように，本研究で開発した技術は，電子ホログラフィを実用化へ近づけるための基礎技術となるものと考える．
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Report
(4 results)
Research Products
(31 results)
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[Journal Article] High-speed playback of spatiotemporal division multiplexing holographic 3D video stored in a solid-state drive using a digital micromirror device2021
Author(s)
Suzuki Kohei, Tao Minori, Maeda Yuki, Nakayama Hirotaka, Ren Noguchi, Minoru Oikawa, Yuichiro Mori, Takashi Kakue, Tomoyoshi Shimobaba, Tomoyoshi Ito, Naoki Takada
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Journal Title
Chinese Optics Letters
Volume: 19
Issue: 9
Pages: 093301-093301
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Real-time color holographic video reconstruction using multiple-graphics processing unit cluster acceleration and three spatial light modulators2020
Author(s)
Shohei Ikawa, Naoki Takada, Hiromitsu Araki, Hiroaki Niwase, Hiromi Sannomiya, Hirotaka Nakayama, Minoru Oikawa, Yuichiro Mori, Takashi Kakue, Tomoyoshi Shimobaba, Tomoyoshi Ito
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Journal Title
Chinese Optics Letters
Volume: 18
Issue: 1
Pages: 010901-010901
DOI
Related Report
Peer Reviewed / Open Access
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[Presentation] Efficient Computation of Binary-Weighted Computer-Generated Hologram for Gradation Representable Electroholography2019
Author(s)
R. Noguchi, T. Sakaguchi, H. Sannomiya, K. Suzuki, M. Oikawa, Y. Mori, T. Kakue, T. Shimobaba, T. Ito, N. Takada
Organizer
Proc. of The International Display Workshop (IDW '19), vol. 26, pp.195-196, 2019.
Related Report
Int'l Joint Research
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[Presentation] Cost-Effective Portable Holographic Projector Using a Single Board Computer2019
Author(s)
Y. Moriguchi, H. Sannomiya, T. Sakaguchi, K. Suzuki, Y. Tanaka, H. Nakayama, M. Oikawa, Y. Mori, T. Kakue, T. Shimobaba, T. Ito, N. Takada
Organizer
Proc. of The International Display Workshop (IDW '19), vol.26, pp.197-198, 2019.
Related Report
Int'l Joint Research
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[Presentation] Real-Time Spatiotemporal Division Multiplexing Electroholography of Point-Cloud 3D Model Comprising 920,000 Points Using Multiple GPU Cluster System2019
Author(s)
H. Sannomiya, H. Nakayama, M. Oikawa, Y. Mori, T. Kakue, T. Shimobaba, T. Ito, N. Takada
Organizer
Proc. of The International Display Workshop (IDW '19), vol. 26, pp.199-201, 2019
Related Report
Int'l Joint Research
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