Large-scale electroholography by HORN-8 from a point-cloud model with 400,000 points

We developed a HORN-8 system that generates computer-generated holograms at a high speed. The cluster system employed eight HORN-8 boards and achieved a level of performance that was 1,000 times faster than that of a PC. From a point-cloud model comprising 65,536 (2(16)) points, the proposed cluster system can update a 2-million-pixel (1,920 x 1,080) hologram at 60 frames per second. 65,536 (2(16)) is the internal memory size of the HORN-8 hardware. However, the HORN-8 system can calculate a hologram at a high speed even if the number of point-cloud sources exceeds 65,536 (2(16)). Herein, we spatiotemporally divided a point-cloud model comprising similar to 400,000 points and succeeded in reproducing the video-holography. We demonstrated the performance of the special-purpose computer for electroholography using HORN-8 hardware that does not require a large internal memory when the calculation speed is high. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement