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Proceedings Paper

A study on computation optimization method for three-dimension scene light field radiation simulation in visible light band
Author(s): Ligang Li; Wei Ni; Xiaoshan Ma; Zhen Yang; Xin Meng; Feifei Shen
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Paper Abstract

The simulation of high accuracy three-dimension (3D) scene optical field radiation distribution can provide the input for camera design, optimization of key parameters and testing of various imaging models. It can benefit for reducing the strong coupling between the imaging models and scene simulation. However, the simulation computation is extremely large and the non-optimization computing method can’t performed efficiently. Therefore, a study was carried out from the algorithm optimization and using high-performance platform to accelerate the operation speed. On the one hand, the visibility of scene was pre-computed which include the visibility from the light source to each facet in scene and the visibility between facets. The bounding box accelerate algorithm was adopted which can avoid a lot of time-consuming computation of occlusion in the light field radiation simulation process. On the other hand, since the 3D scene light field radiation simulation was obtained by a large number of light approximation, the algorithms can be divided blocks and processed parallelly. The GPU parallel framework was adopted to realize the simulation model of light field radiation in visible band. Finally, experiments were performed. The result shown the proposed method was more efficient and effective compared with the non-optimization method.

Paper Details

Date Published: 24 October 2016
PDF: 7 pages
Proc. SPIE 10007, High-Performance Computing in Geoscience and Remote Sensing VI, 1000703 (24 October 2016); doi: 10.1117/12.2240631
Show Author Affiliations
Ligang Li, National Space Science Ctr. (China)
Wei Ni, National Space Science Ctr. (China)
Xiaoshan Ma, National Space Science Ctr. (China)
Zhen Yang, National Space Science Ctr. (China)
Xin Meng, National Space Science Ctr. (China)
Feifei Shen, National Space Science Ctr. (China)

Published in SPIE Proceedings Vol. 10007:
High-Performance Computing in Geoscience and Remote Sensing VI
Bormin Huang; Sebastián López; Zhensen Wu; Jose M. Nascimento; Jun Li; Valeriy V. Strotov, Editor(s)

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