All-frequency precomputed radiance transfer using spherical radial basis functions and clustered tensor approximation
-
- Yu-Ting Tsai
- National Chiao Tung University, Taiwan
-
- Zen-Chung Shih
- National Chiao Tung University, Taiwan
説明
<jats:p>This paper introduces a new data representation and compression technique for<jats:italic>precomputed radiance transfer</jats:italic>(PRT). The light transfer functions and light sources are modeled with<jats:italic>spherical radial basis functions</jats:italic>(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.</jats:p>
収録刊行物
-
- ACM Transactions on Graphics
-
ACM Transactions on Graphics 25 (3), 967-976, 2006-07
Association for Computing Machinery (ACM)
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1362544418342603136
-
- NII論文ID
- 30022063471
-
- ISSN
- 15577368
- 07300301
-
- データソース種別
-
- Crossref
- CiNii Articles