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Journal of Computer Science and Technology 2013, Vol. 28 Issue (3) :490-498    DOI: 10.1007/s11390-013-1350-4
Graphics, Visualization, and Image Processing << Previous Articles | Next Articles >>
包含二次光线的景深效果的交互式绘制
Guo-Fu Xie1,2 (谢国富), Member, ACM, Xin Sun3 (孙鑫), Member, ACM, and Wen-Cheng Wang1 (王文成), Member, CCF
1. State Key Laboratory of Computer Science, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. Microsoft Research Asia, Beijing 100080, China
Interactive Depth-of-Field Rendering with Secondary Rays
Guo-Fu Xie1,2 (谢国富), Member, ACM, Xin Sun3 (孙鑫), Member, ACM, and Wen-Cheng Wang1 (王文成), Member, CCF
1. State Key Laboratory of Computer Science, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. Microsoft Research Asia, Beijing 100080, China

摘要
参考文献
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摘要 本文提出一种的方法,它能够在景深效果绘制中有效地处理二次光线,极大地增强了场景真实感。迄今,在实时及交互式景深绘制中,还很少有关注含二次光线的景深效果。因为相比于主光线,二次光线有更少的一致性,因此它们更难处理。本文使用新的方式聚类二次光线,在每个聚类中,对可能与此聚类中的二次光线相交的物体,采用虚拟视点对其构造基于层次图像的表示。因此,本文能够利用聚类中二次光线的一致性,加速处理景深绘制中的二次光线。结果表明,本文方法能在通用图形卡上交互式地生成带有反射或折射的景深绘制效果。
关键词交互式绘制   景深效果   反射   折射   聚类     
Abstract: This paper presents an efficient method to trace secondary rays in depth-of-field (DOF) rendering, which significantly enhances realism. Till now, the effects by secondary rays have been little addressed in real-time/interactive DOF rendering, because secondary rays have less coherence than primary rays, making them very difficult to handle. We propose novel measures to cluster secondary rays, and take a virtual viewpoint to construct a layered image-based representation for the objects that would be intersected by a cluster of secondary rays respectively. Therefore, we can exploit coherence of secondary rays in the clusters to speed up tracing secondary rays in DOF rendering. Results show that we can interactively achieve DOF rendering effects with reflections or refractions on a commodity graphics card.
Keywordsinteractive rendering   depth-of-field effect   reflection   refraction   clustering     
Received 2012-05-06;
本文基金:

This work was partly supported by the National Natural Science Foundation of China under Grant Nos. 60773026 and 60833007, and the Knowledge Innovation Program of the Chinese Academy of Sciences.

About author: Guo-Fu Xie received a B.S. degree in software engineering from Xiamen University in 2007. He is a Ph.D. candidate in the State Key Laboratory of Computer Science, Institute of Software, Chinese Academy of Sciences, Beijing. His major research interests lie in real-time photorealistic rendering and vector rendering.
引用本文:   
Guo-Fu Xie, Xin Sun, and Wen-Cheng Wang.包含二次光线的景深效果的交互式绘制[J]  Journal of Computer Science and Technology , 2013,V28(3): 490-498
Guo-Fu Xie, Xin Sun, and Wen-Cheng Wang.Interactive Depth-of-Field Rendering with Secondary Rays[J]  Journal of Computer Science and Technology, 2013,V28(3): 490-498
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http://jcst.ict.ac.cn:8080/jcst/CN/10.1007/s11390-013-1350-4
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