Real-time gradation-expressible amplitude-modulationtype electroholography based on binary-weighted computer-generated hologram  

作　　者：Ren Noguchi Kohei Suzuki Yoshiki Moriguchi Minoru Oikawa Yuichiro Mori Takashi Kakue Tomoyoshi Shimobaba Tomoyoshi Ito Naoki Takada 

机构地区：[1]Graduate School of Integrated Arts and Sciences,Kochi University,Kochi 780-8520,Japan [2]Research and Education Faculty,Kochi University,Kochi 780-8520,Japan [3]Graduate School of Engineering,Chiba University,Chiba 263-8522,Japan

出　　处：《Chinese Optics Letters》2021年第11期8-15,共8页中国光学快报（英文版）

基　　金：This work was partially supported by the Japan Society for the Promotion of Science(JSPS)KAKENHI(No.21K11996);I-O DATA Foundation.

摘　　要：In amplitude-modulation-type electroholography, the binary-weighted computer-generated hologram(BW-CGH) facilitates the gradation-expressible reconstruction of three-dimensional(3 D) 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 computer-generated holograms. Consequently, we were able to successfully reconstruct a real-time electroholographic 3 D video comprising approximately 180,000 points expressed in eight gradations at 30 frames per second.

关 键 词：gradation-expressible electroholography binary-weighted computer-generated hologram digital micromirror device computer-generated hologram 

分 类 号：TN27[电子电信—物理电子学] TP391.41[自动化与计算机技术—计算机应用技术]