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A method of calculating full-parallax computer-generated hologram with occlusion and lighting in real time
Author(s): Kai Wu; Jianhong Wu; Lingyan Shi; Mingliang Yao; Yun Chen; Minjie Hua
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Paper Abstract

In this paper, a method based on point source and view-window is proposed that covers the features as full parallax, depth and accurate occlusion cue, shading and lighting, and ensures the computational efficiency in the meantime, to calculate the on-the-fly computer-generated holograms. With the acceleration of graphics processing unit (GPU), a bunch of point data of reconstructed image go through the pipeline of OpenGL and finish with coordinates transformation, fragment interpolation, lighting calculation, occlusion test, calculation and superposition of complex amplitude, and finally hologram are generated and loaded into the spatial light modulator (SLM). The experimental result shows that the lifelike complex full-parallax objects can be reconstructed at a high speed with varying gloss and accurate occlusion when viewed from different perspectives in the view-window.

Paper Details

Date Published: 18 November 2019
PDF: 15 pages
Proc. SPIE 11188, Holography, Diffractive Optics, and Applications IX, 111881Y (18 November 2019); doi: 10.1117/12.2537603
Show Author Affiliations
Kai Wu, Soochow Univ. (China)
Jianhong Wu, Soochow Univ. (China)
Lingyan Shi, Soochow Univ. (China)
Mingliang Yao, Soochow Univ. (China)
Yun Chen, Soochow Univ. (China)
Minjie Hua, Soochow Univ. (China)


Published in SPIE Proceedings Vol. 11188:
Holography, Diffractive Optics, and Applications IX
Yunlong Sheng; Changhe Zhou; Liangcai Cao, Editor(s)

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