color electroholography;
real-time electroholography;
multiple-graphics processing unit cluster;
graphics processing unit;
LIQUID-CRYSTAL DISPLAY;
ELECTROHOLOGRAPHY;
COMPUTATION;
SYSTEM;
GENERATION;
DECOMPOSITION;
OBJECT;
GPU;
D O I:
10.3788/COL202018.010901
中图分类号:
O43 [光学];
学科分类号:
070207 ;
0803 ;
摘要:
We demonstrate real-time three-dimensional (3D) color video using a color electroholographic system with a cluster of multiple-graphics processing units (multi-GPU) and three spatial light modulators (SLMs) corresponding respectively to red, green, and blue (RGB)-colored reconstructing lights. The multi-GPU cluster has a computer-generated hologram (CGH) display node containing a GPU, for displaying calculated CGHs on SLMs, and four CGH calculation nodes using 12 GPUs. The GPUs in the CGH calculation node generate CGHs corresponding to RGB reconstructing lights in a 3D color video using pipeline processing. Real-time color electroholography was realized for a 3D color object comprising approximately 21,000 points per color.