A fast ambient occlusion method for real-time plant rendering

CASIA OpenIR > 09年以前成果

	A fast ambient occlusion method for real-time plant rendering
	Teng, Jun ; Jaeger, Marc ; Hu, Bao-Gang
发表期刊	JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY
	2007-11-01
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	被引频次：2[WOS] [WOS记录] [WOS相关记录]
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
推荐引用方式 GB/T 7714	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.