Fast Hologram Generating of 3D Object with Super Multi-Light Source using Parallel Distributed Computing

摘要

??? ?? ????(CGH: computer-generated hologram) ??? ???? ?? ???(PC: personal computer)??? ????? ?? ????? ????. CGH ????? ???? ????? ????? ??? ??? 3D (three-dimensional) ??? ?? ??? ?? ???? ???, ???? ??? ????? ????? ???? ???? ??? ?? ??? ????. ??? CGH ??? ????? ???? ???? CGH ???? ????, ????? ?? ??? ??? ??? ????. ? ????? ?? ?? ???? ???? ???? 3?? ??? ????? ???? ??? ? ?? ???? ????. ??? ???? ?? ?? PC? ???? ???? CGH? ???? ??? ???? ??? ?? ??? ?????? ??? ??? ??, ? ???? ???? ??? ?? PC? ???? GPU? ???? ?? ??? ????? PC?? ?? ??? ????? ???? ???? ??? ?? ???? CGH? ??? ? ??. ?? ??, ???? ??? ???? 157,771?? ??? ?? ???? 3?? ??? ?? 1,536×1,536 ???? ?? ????? ? 121ms? ??? ? ??? ??? ? ???. ??, ????? PC? ?? ?????? ??? ????? ???? ??? ???? ?? ??? ? ???.The computer generated hologram (CGH) method is the technology which can generate a hologram by using only a personal computer (PC) commonly used. However, the CGH method requires a huge amount of calculational time for the 3D object with a super multi-light source or a high-definition hologram. Hence, some solutions are obviously necessary for reducing the computational complexity of a CGH algorithm or increasing the computing performance of hardware. In this paper, we propose a method which can generate a digital hologram of the 3D object with a super multi-light source using parallel distributed computing. The traditional methods has the limitation of improving CGH performance by using a single PC. However, the proposed method where a server PC efficiently uses the computing power of client PCs can quickly calculate the CGH method for 3D object with super multi-light source. In the experimental result, we verified that the proposed method can generate the digital hologram with 1,536×1,536 resolution size of 3D object with 157,771 light source in 121 ms. In addition, in the proposed method, we verify that the proposed method can reduce generation time of a digital hologram in proportion to the number of client PCs.