Fast calculation of CGH using improved symmetric compressed LUT algorithm

Tao Zhao; Juan Liu; Weiting Peng; Yongtian Wang

doi:10.1117/12.2503469

2 November 2018 Fast calculation of CGH using improved symmetric compressed LUT algorithm

Tao Zhao, Juan Liu, Weiting Peng, Yongtian Wang

Proceedings Volume 10818, Holography, Diffractive Optics, and Applications VIII; 1081803 (2018) https://doi.org/10.1117/12.2503469
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

Abstract

Computer-generated hologram (CGH) is a key technology in electro-holography systems. However, the huge computational complexity is a challenge for practical demands. In this paper, we propose an improved algorithm to accelerate CGH computation based on symmetric compressed LUT (SC-LUT) algorithm. In LUT calculation, the horizontal and vertical modulation factors is reduced to one-dimension arrays instead of dual one-dimension arrays. In hologram calculation, we introduce a one-time generation of color holograms method which is accelerated by matrix convolution operation. Numerical simulation results also show at least 13 times faster than existing algorithms without sacrificing the computation precision. The proposed algorithm accelerated by the graphic processing unit (GPU) is an effective method for fast calculation of CGH in color holographic display.

Citation Download Citation

Tao Zhao, Juan Liu, Weiting Peng, and Yongtian Wang "Fast calculation of CGH using improved symmetric compressed LUT algorithm", Proc. SPIE 10818, Holography, Diffractive Optics, and Applications VIII, 1081803 (2 November 2018); https://doi.org/10.1117/12.2503469

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