A median cut algorithm for light probe sampling

Paul Debevec
2005 ACM SIGGRAPH 2005 Posters on - SIGGRAPH '05  
We present a technique for approximating a light probe image as a constellation of light sources based on a median cut algorithm. The algorithm is efficient, simple to implement, and can realistically represent a complex lighting environment with as few as 64 point light sources.
doi:10.1145/1186954.1187029 dblp:conf/siggraph/Debevec05b fatcat:7xmo4t25uraspiampjleztsy5i