@inproceedings{c4ad88bfddbe4b90b5f276784de3085a,
title = "GPU-based soft shadow rendering using non-linear pre-computed radiance transfer approximation",
abstract = "Soft shadow computation plays an important role in generating photo-realistic images. A new method of real-time all-frequency shadow rendering in 3D scenes under dynamic illumination is introduced in this paper. The non-linear wavelet approximation on the pre-computed radiance transfer matrix is used, which can help us to select the main directions sensitive to illumination of each sampling point. This approach efficiently avoids non-linear selection of the light vector in real-time rendering, and the approximation is used only once in the pre-computed phrase. We encode the resulting radiance transfer matrix into a sparse form, and store it as textures in 2D texture buffers. Meanwhile, the light vector is organized into a cube map on GPU to accelerate computation in the run-time process. This approach has been applied to render a variety of 3D scenes with soft shadows, and proved to be able to increase the relighting speed with no image quality reduction.",
keywords = "Pre-computed radiance transfer, Relighting, Shadow algorithm",
author = "Lui Wang and Jing Wang and Qinping Zhao",
year = "2006",
doi = "10.1007/11890881\_10",
language = "英语",
isbn = "3540463046",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer Verlag",
pages = "81--92",
booktitle = "Interactive Technologies and Sociotechnical Systems - 12th International Conference, VSMM 2006, Proceedings",
address = "德国",
note = "12th International Conference on Virtual Systems and Multimedia, VSMM 2006 ; Conference date: 18-10-2006 Through 20-10-2006",
}