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JBE, vol. 22, no. 4, pp.509-518, July, 2017
Fast Generation of Digital Video Holograms Using Multiple PCs
Hanhoon Park, Changseob Kim, and Jong-Il Park
C.A E-mail: email@example.com
High-resolution digital holograms can be quickly generated by using a PC cluster that is based on server-client architecture and is composed of several GPU-equipped PCs. However, the data transmission time between PCs becomes a large obstacle for fast generation of video holograms because it linearly increases in proportion to the number of frames. To resolve the problem with the increase of data transmission time, this paper proposes a multi-threading-based method. Hologram generation in each client PC basically consists of three processes: acquisition of light sources, CGH operation using GPUs, and transmission of the result to the server PC. Unlike the previous method that sequentially executes the processes, the proposed method executes in parallel them by multi-threading and thus can significantly reduce the proportion of the data transmission time to the total hologram generation time. Through experiments, it was confirmed that the total generation time of a high-resolution video hologram with 150 frames can be reduced by about 30%.
Keyword: CGH, digital video hologram, PC cluster, multi-threading, CUDA
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