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A fast point-cloud computing method based on spatial symmetry of Fresnel field
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Paper Abstract

Aiming at the great challenge for Computer Generated Hologram (CGH) duo to the production of high spatial-bandwidth product (SBP) is required in the real-time holographic video display systems. The paper is based on point-cloud method and it takes advantage of the propagating reversibility of Fresnel diffraction in the propagating direction and the fringe pattern of a point source, known as Gabor zone plate has spatial symmetry, so it can be used as a basis for fast calculation of diffraction field in CGH. A fast Fresnel CGH method based on the novel look-up table (N-LUT) method is proposed, the principle fringe patterns (PFPs) at the virtual plane is pre-calculated by the acceleration algorithm and be stored. Secondly, the Fresnel diffraction fringe pattern at dummy plane can be obtained. Finally, the Fresnel propagation from dummy plan to hologram plane. The simulation experiments and optical experiments based on Liquid Crystal On Silicon (LCOS) is setup to demonstrate the validity of the proposed method under the premise of ensuring the quality of 3D reconstruction,the method proposed in the paper can be applied to shorten the computational time and improve computational efficiency.

Paper Details

Date Published: 24 October 2017
PDF: 7 pages
Proc. SPIE 10461, AOPC 2017: Optical Spectroscopy and Imaging, 104611H (24 October 2017); doi: 10.1117/12.2285501
Show Author Affiliations
Xiangxiang Wang, Anhui Univ. (China)
Kai Zhang, Anhui Univ. (China)
Chuan Shen, Anhui Univ. (China)
Wenliang Zhu, Anhui Univ. (China)
Sui Wei, Anhui Univ. (China)


Published in SPIE Proceedings Vol. 10461:
AOPC 2017: Optical Spectroscopy and Imaging
Jin Yu; Zhe Wang; Wei Hang; Bing Zhao; Xiandeng Hou; Mengxia Xie; Tsutomu Shimura, Editor(s)

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