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A fast ambient occlusion method for real-time plant rendering
Teng, Jun; Jaeger, Marc; Hu, Bao-Gang
2007-11-01
发表期刊JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY
卷号22期号:6页码:859-866
文章类型Article
摘要Global illumination effects are crucial for virtual plant rendering. Whereas real-time global illumination rendering of plants is impractical, ambient occlusion is an efficient alternative approximation. A tree model with millions of triangles is common, and the triangles can be considered as randomly distributed. The existing ambient occlusion methods fail to apply on such a type of object. In this paper, we present a new ambient occlusion method dedicated to real time plant rendering with limited user interaction. This method is a three-step ambient occlusion calculation framework which is suitable for a huge number of geometry objects distributed randomly in space. The complexity of the proposed algorithm is O(n), compared to the conventional methods with complexities of O(n(2)). Furthermore, parameters in this method can be easily adjusted to achieve flexible ambient occlusion effects. With this ambient occlusion calculation method, we can manipulate plant models with millions of organs, as well as geometry objects with large number of randomly distributed components with affordable time, and with perceptual quality comparable to the previous ambient occlusion methods.
关键词Accessibility Value Estimation Plant Visualization Real-time Rendering
WOS标题词Science & Technology ; Technology
关键词[WOS]MODELS
收录类别SCI
语种英语
WOS研究方向Computer Science
WOS类目Computer Science, Hardware & Architecture ; Computer Science, Software Engineering
WOS记录号WOS:000251010700008
引用统计
文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/9405
专题09年以前成果
作者单位1.Chinese Acad Sci, Inst Automat, LIAMA NLPR, Beijing 100080, Peoples R China
2.INRIA Futurs, DigiPlante Team, CIRAD AMAP, Montpellier, France
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Teng, Jun,Jaeger, Marc,Hu, Bao-Gang. A fast ambient occlusion method for real-time plant rendering[J]. JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY,2007,22(6):859-866.
APA Teng, Jun,Jaeger, Marc,&Hu, Bao-Gang.(2007).A fast ambient occlusion method for real-time plant rendering.JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY,22(6),859-866.
MLA Teng, Jun,et al."A fast ambient occlusion method for real-time plant rendering".JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY 22.6(2007):859-866.
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