A Detection Method of Non-uniform Color Area Using Color Histogram

Abstract

We propose a new detection method of non-uniform color area. This method discriminates non-uniform area from uniform area by color frequency. This frequency is obtained by using color histogram, in which each point has the frequency of the color. The frequency of the color of non-uniform area is low compared with the uniform area because the non-uniform area is smaller than the uniform area. To compare the frequency, we create gray histogram images in which original color value is replaced by the frequency of the color. This method requires very few amounts of calculation although it needs multiple color images. Moreover, this method gives us new evaluation criteria for color uniformity.