<P>PROBLEM TO BE SOLVED: To provide a system and a method for presuming an image light source model that is evaluated best to an object image data from light sources. <P>SOLUTION: A design matrix for the set of a plurality of light sources is formed, the image histogram of image element color coordinates related to color coordinates distribution under a light source being a candidate is created, a plurality of match scores are determined for a plurality of candidate light sources, and a point corresponding to data for indicating the probability of a light source on an image is determined on a surface for presuming the light source. <P>COPYRIGHT: (C)2005,JPO&NCIPI 
LIGHT SOURCE PRESUMPTION SYSTEM AND METHOD