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  • Received: Dec. 30, 2019

    Accepted: Apr. 30, 2020

    Posted: Jun. 12, 2020

    Published Online: Jun. 15, 2020

    The Author Email: Naoki Takada (ntakada@is.kochi-u.ac.jp)

    DOI: 10.3788/COL202018.070901

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    Hiromi Sannomiya, Naoki Takada, Kohei Suzuki, Tomoya Sakaguchi, Hirotaka Nakayama, Minoru Oikawa, Yuichiro Mori, Takashi Kakue, Tomoyoshi Shimobaba, Tomoyoshi Ito. Real-time spatiotemporal division multiplexing electroholography for 1,200,000 object points using multiple-graphics processing unit cluster[J]. Chinese Optics Letters, 2020, 18(7): 070901

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Chinese Optics Letters, Vol. 18, Issue 7, 070901 (2020)

Real-time spatiotemporal division multiplexing electroholography for 1,200,000 object points using multiple-graphics processing unit cluster

Hiromi Sannomiya1, Naoki Takada2,*, Kohei Suzuki1, Tomoya Sakaguchi1, Hirotaka Nakayama3, Minoru Oikawa2, Yuichiro Mori2, Takashi Kakue4, Tomoyoshi Shimobaba4, and Tomoyoshi Ito4

Author Affiliations

  • 1Graduate School of Integrated Arts and Sciences, Kochi University, Kochi 780-8520, Japan
  • 2Research and Education Faculty, Kochi University, Kochi 780-8520, Japan
  • 3National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
  • 4Graduate School of Engineering, Chiba University, Inage-ku 263-8522, Japan

Abstract

Computationally, the calculation of computer-generated holograms is extremely expensive, and the image quality deteriorates when reconstructing three-dimensional (3D) holographic video from a point-cloud model comprising a huge number of object points. To solve these problems, we implement herein a spatiotemporal division multiplexing method on a cluster system with 13 GPUs connected by a gigabit Ethernet network. A performance evaluation indicates that the proposed method can realize a real-time holographic video of a 3D object comprising ~1,200,000 object points. These results demonstrate a clear 3D holographic video at 32.7 frames per second reconstructed from a 3D object comprising 1,064,462 object points.

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