24 October 2017 A fast point-cloud computing method based on spatial symmetry of Fresnel field
Author Affiliations +
Proceedings Volume 10461, AOPC 2017: Optical Spectroscopy and Imaging; 104611H (2017) https://doi.org/10.1117/12.2285501
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
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.
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xiangxiang Wang, Kai Zhang, Chuan Shen, Wenliang Zhu, Sui Wei, "A fast point-cloud computing method based on spatial symmetry of Fresnel field", Proc. SPIE 10461, AOPC 2017: Optical Spectroscopy and Imaging, 104611H (24 October 2017); doi: 10.1117/12.2285501; https://doi.org/10.1117/12.2285501
PROCEEDINGS
7 PAGES


SHARE
Back to Top