• Chinese Optics Letters
  • Vol. 19, Issue 11, (2021)
Noguchi Ren, Suzuki Kohei, Moriguchi Yoshiki, Oikawa Minoru, Mori Yuichiro, Kakue Takashi, Shimobaba Tomoyoshi, Ito Tomoyoshi, Takada Naoki
Author Affiliations
  • Kochi University
  • Kochi Daigaku
  • Chiba Daigaku
  • Chiba Daigaku Daigakuin Kogaku Kenkyuka Kogakubu
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    Abstract

    In amplitude-modulation-type electroholography, the binary-weighted computer-generated hologram (BW-CGH) facilitates the gradation-expressible reconstruction of three-dimensional (3D) objects. To realize real-time gradation-expressible electroholography, we propose an efficient and high-speed method for calculating bit planes consisting of BW-CGHs. The proposed method is implemented on a multiple graphics processing unit (GPU) cluster system comprising 13 GPUs. The proposed BW-CGH method realizes eight-gradation expressible electroholography at approximately the same calculation speed as that of conventional electroholography based on binary CGH. Consequently, we were able to successfully reconstruct a real-time electroholographic 3D video comprising approximately 180,000 points expressed in eight gradations at 30 frames per second.
    Manuscript Accepted: Sep. 14, 2021
    Posted: Sep. 15, 2021