PURPOSE: A light source estimating apparatus and a light source estimating method are provided to determine the kind of light sources through a color balance in a neutral gray area. CONSTITUTION: A second color balance calculating unit calculates a color balance of a neural gray area. The neural gray area is a gray area in an image pixel signal. A feature vector generating unit(210) generates a feature vector based on correlation coefficient, a color balance of an image, and a color balance of the neutral gray area. A discriminating unit(211) determines the kind of light sources in the image pixel signal.
Device for estimating light source and method thereof