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

Yu Ting Tsai*, Zen-Chung Shih

*此作品的通信作者

研究成果: Conference contribution同行評審

29 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
主出版物標題ACM SIGGRAPH 2006 Papers, SIGGRAPH '06
頁面967-976
頁數10
DOIs
出版狀態Published - 1 12月 2006
事件ACM SIGGRAPH 2006 Papers, SIGGRAPH '06 - Boston, MA, United States
持續時間: 30 7月 20063 8月 2006

出版系列

名字ACM SIGGRAPH 2006 Papers, SIGGRAPH '06

Conference

ConferenceACM SIGGRAPH 2006 Papers, SIGGRAPH '06
國家/地區United States
城市Boston, MA
期間30/07/063/08/06

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