“Variance minimization light probe sampling” by Viriyothai and Debevec
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Title:
- Variance minimization light probe sampling
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Abstract:
We present a technique for sampling the light probe image using variance minimization. The technique modifies median cut algorithm for light probe sampling [Debevec 2005] so that the variance of each region is minimized. The algorithm is fast, efficient, and easy to implement.
References:
1. Debevec, P. 2005. A Median Cut Algorithm for Light Probe Sampling (SIGGRAPH Poster 2005)
2. CLINE, D., EGBERT, P. K., TALBOT, J. F., AND CARDON, D. L. 2006. Two Stage Importance Sampling for Direct Lighting (EGSR 2006)
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