Many research studies show that the chrominance components of the skin-tone color are independent of the luminance component. In this paper, we omit the intensity component Y and detect skin tone only based on the compactness of the skin cluster in the CbCr subspace. We are going to create a skin detection method based on color histograms to segment skin regions from a cluttered background, which performs skin/non-skin classification using a mixture of Gaussians obtained from Cb and Cr color histograms. The motivation for using a mixture of
Gaussians is based on the assumption of Gaussian distribution of skin tone color and the observation that background pixels have the same depth and outnumber the pixels in the foreground regions .As shown in Figure 14(a) that is the Cb histogram of the YCbCr image in Figure 14(b), which typically exhibits 2 prominent peaks. The uppermost peak in the right corresponds to the background pixels, while the second highest peak in the left corresponds to the foreground regions, including skin regions.