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题名: A study on computation optimization method for three-dimension scene light field radiation simulation in visible light band
作者: Li, Ligang; Ni, Wei; Ma, Xiaoshan; Yang, Zhen; Meng, Xin; Shen, Feifei
作者部门: 空间技术部
通讯作者: Li, LG (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Key Lab Elect & Informat Technol Space Syst, Beijing 100190, Peoples R China.
会议名称: Conference on High-Performance Computing in Geoscience and Remote Sensing VI
会议日期: 2016-09-28
会议地点: Edinburgh, SCOTLAND
会议录: HIGH-PERFORMANCE COMPUTING IN GEOSCIENCE AND REMOTE SENSING VI
出版日期: 2016
收录类别: CPCI
ISSN号: 0277-786X
ISBN号: 978-1-5106-0418-6; 978-1-5106-0419-3
关键词: Computation optimization ; visible light band ; light field ; radiation simulation ; three-dimension scene
英文摘要: 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.
语种: 英语
内容类型: 会议论文
URI标识: http://ir.nssc.ac.cn/handle/122/5796
Appears in Collections:空间技术部_会议论文

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