Imperfect shadow maps for efficient computation of indirect illumination

Imperfect shadow maps for efficient computation of indirect illumination
复制标题

用于高效计算间接照明的不完美阴影贴图

DOI:
10.1145/1409060.1409082
复制
发表时间:
2008
影响因子:
6.2
通讯作者:
Ritschel T
Ritschel T
中科院分区:
计算机科学1区
文献类型:
--
作者:
Ritschel T

文献摘要

参考文献

被引文献

相似文献

提出了一种基于近似可见性查询的大型全动态场景间接光照交互计算方法。虽然直接照明的高频特性需要精确的可见度,但间接照明主要由平滑渐变组成,这往往会掩盖由于不正确的可见度而导致的错误。我们利用这一点,通过近似的间接照明与不完美的阴影图-低分辨率的阴影图渲染从一个粗糙的基于点的表示场景的可见性。这些与基于虚拟点光源的全局照明算法结合使用,从而能够以实时帧速率间接照明动态场景。我们证明,不完美的阴影图是一个有效的近似的可见性,这使得模拟的全局照明的数量级比使用准确的可见性。
We present a method for interactive computation of indirect illumination in large and fully dynamic scenes based on approximate visibility queries. While the high-frequency nature of direct lighting requires accurate visibility, indirect illumination mostly consists of smooth gradations, which tend to mask errors due to incorrect visibility. We exploit this by approximating visibility for indirect illumination withimperfect shadow maps---low-resolution shadow maps rendered from a crude point-based representation of the scene. These are used in conjunction with a global illumination algorithm based on virtual point lights enabling indirect illumination of dynamic scenes at real-time frame rates. We demonstrate that imperfect shadow maps are a valid approximation to visibility, which makes the simulation of global illumination an order of magnitude faster than using accurate visibility.
DOI: 10.1109/pg.2007.37
发表时间: 2007-10
期刊: 15th Pacific Conference on Computer Graphics and Applications (PG'07)
影响因子: --
作者:
Z. Dong;J. Kautz;C. Theobalt;H. Seidel
通讯作者: Z. Dong;J. Kautz;C. Theobalt;H. Seidel
DOI: 10.2312/egwr/egsr06/227-234
发表时间: 2006-06
期刊: --
影响因子: --
作者:
Gaël Guennebaud;L. Barthe;M. Paulin
通讯作者: Gaël Guennebaud;L. Barthe;M. Paulin
交互式全局照明
DOI: --
发表时间: 2002
期刊:
影响因子: --
作者:
I. Wald;T. Kollig;Carsten Benthin;A. Keller;P. Slusallek
通讯作者: P. Slusallek
是否需要精确遮挡光泽反射?
DOI: --
发表时间: 2007
期刊: Applied Perception in Graphics and Visualization
影响因子: --
作者:
Oscar Kozlowski;J. Kautz
通讯作者: J. Kautz
Eurographics Symposium on Rendering (2007) Jan Kautz 和 Sumanta Pattanaik(编辑) 使用光谱网格基础的实时间接照明的预计算辐射度传输 摘要
DOI: --
发表时间: --
期刊:
影响因子: --
作者:
Floris C. Wardenaar;Lindsay Morton;Kahyun Nam;Hannah Lybbert;Kinta D Schott;Colin Shumate;Hans van der Mars;Pamela Kulinna
通讯作者: Pamela Kulinna