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24 October 2017 Using spatial frequency index method to cull occlusion for computer generated hologram
Junhui Liu, Yibei Chen, Jian Su, Xiaoyu Jiang, Xingpeng Yan
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Proceedings Volume 10459, AOPC 2017: Optical Storage and Display Technology; 1045907 (2017) https://doi.org/10.1117/12.2283309
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
Abstract
A spatial frequency index method is proposed to cull the occlusion in computer generated hologram. The object points with the same spatial frequency are put into a set, and only the point closest to the hologram is contributed to the hologram because of their mutual occlusion. The phases of corresponded spatial frequency are precomputed and stored in a table. The phases on the hologram are obtained from the table according to the spatial frequency of object point. Experiments are performed and the results demonstrate that the proposed method can cull the hidden surfaces of 3-D scene correctly. The occlusion effect can be well reproduced along with the speeding up of the calculation.
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Junhui Liu, Yibei Chen, Jian Su, Xiaoyu Jiang, and Xingpeng Yan "Using spatial frequency index method to cull occlusion for computer generated hologram", Proc. SPIE 10459, AOPC 2017: Optical Storage and Display Technology, 1045907 (24 October 2017); https://doi.org/10.1117/12.2283309
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KEYWORDS
Spatial frequencies
Computer generated holography
Holography
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