All-frequency precomputed radiance transfer using spherical radial basis functions and clustered tensor approximation

Yu Ting Tsai*, Zen-Chung Shih

*Corresponding author for this work

研究成果: Conference article同行評審

105 引文 斯高帕斯(Scopus)

摘要

This paper introduces a new data representation and compression technique for precomputed radiance transfer (PRT). The light transfer functions and light sources are modeled with spherical radial basis functions (SRBFs). A SRBF is a rotation-invariant function that depends on the geodesic distance between two points on the unit sphere. Rotating functions in SRBF representation is as straightforward as rotating the centers of SRBFs. Moreover, high-frequency signals are handled by adjusting the bandwidth parameters of SRBFs. To exploit inter-vertex coherence, the light transfer functions are further classified iteratively into disjoint clusters, and tensor approximation is applied within each cluster. Compared with previous methods, the proposed approach enables real-time rendering with comparable quality under high-frequency lighting environments. The data storage is also more compact than previous all-frequency PRT algorithms.

原文English
頁(從 - 到)967-976
頁數10
期刊ACM Transactions on Graphics
25
發行號3
DOIs
出版狀態Published - 1 七月 2006
事件ACM SIGGRAPH 2006 - Boston, MA, United States
持續時間: 30 七月 20063 八月 2006

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