›› 2013,Vol. 28 ›› Issue (3): 490-498.doi: 10.1007/s11390-013-1350-4

所属专题： Artificial Intelligence and Pattern Recognition； Computer Graphics and Multimedia

• Special Section on Selected Paper from NPC 2011 • 上一篇    下一篇

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. 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
  • 收稿日期:2012-05-06 修回日期:2012-09-18 出版日期:2013-05-05 发布日期:2013-05-05
  • 作者简介: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.
  • 基金资助:

    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.

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. 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
  • Received:2012-05-06 Revised:2012-09-18 Online:2013-05-05 Published:2013-05-05
  • Contact: 10.1007/s11390-013-1350-4
  • Supported by:

    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.

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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。

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.

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