Irradiance regression for efficient final gathering in global illumination
Irradiance regression for efficient final gathering in global illumination
复制标题
辐照度回归可实现全局照明中有效的最终聚集
DOI:
10.1007/s11704-014-4211-6
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发表时间:
2015-06
影响因子:
4.2
通讯作者:
Zhou Kun
中科院分区:
文献类型:
--
作者:
Huang Xuezhen;Sun Xin;Ren Zhong;Tong Xin;Guo Baining;Zhou Kun
Photon mapping is widely used for global illumination rendering because of its high computational efficiency. But its efficiency is still limited mainly by the intensive sampling required in final gathering a process that is critical for removing low frequency artifacts of density estimation. In this paper we propose a method to predict the final gathering estimation with direct density estimation thereby achieving high quality global illumination by photon mapping with high efficiency. We first sample the irradiance of a subset of shading points by both final gathering and direct radiance estimation. Then we use the samples as a training set to predict the final gathered irradiance of other shading points through regression. Consequently we are able to achieve about three times overall speedup compared with straightforward final gathering in global illumination computation with the same rendering quality.
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DOI:
10.1145/2542266.2542281
发表时间:
2012-08
期刊:
SIGGRAPH Asia 2013 Courses
影响因子:
--
作者:
T. Hachisuka;Wojciech Jarosz;Iliyan Georgiev;Anton Kaplanyan;D. Nowrouzezahrai;Ben Spencer
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T. Hachisuka;Wojciech Jarosz;Iliyan Georgiev;Anton Kaplanyan;D. Nowrouzezahrai;Ben Spencer
DOI:
10.1145/1661412.1618479
发表时间:
2009-12
期刊:
ACM SIGGRAPH Asia 2009 papers
影响因子:
--
作者:
Jiaping Wang;Peiran Ren;Minmin Gong;John M. Snyder;B. Guo
通讯作者:
Jiaping Wang;Peiran Ren;Minmin Gong;John M. Snyder;B. Guo
DOI:
10.1145/1053427.1053460
发表时间:
2005-04
期刊:
--
影响因子:
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作者:
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通讯作者:
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DOI:
10.1109/tvcg.2013.79
发表时间:
2013-05
影响因子:
5.2
作者:
C. Bouville;Mickaël Ribardière;Luís Paulo Santos;K. Bouatouch;R. Marques
通讯作者:
C. Bouville;Mickaël Ribardière;Luís Paulo Santos;K. Bouatouch;R. Marques
DOI:
10.1145/1201775.882280
发表时间:
2003-07
期刊:
ACM SIGGRAPH 2003 Papers
影响因子:
--
作者:
Ren Ng;R. Ramamoorthi;P. Hanrahan
通讯作者:
Ren Ng;R. Ramamoorthi;P. Hanrahan