在彩色空间中，皮肤颜色的分布较为集中，与其他景物颜色间有较好的可区分性，可以用模型描述或对样本进行学习的方法加以判别。图像中皮肤颜色的差异主要由光照引起，在检测中只考虑色度信息，就可以减少光照的影响，使肤色的分布更趋集中。通过检测皮肤区域，可以缩小人脸的搜索范围，提高检测速度。HSV空间是RGB空间的非线性变换，它将原本相关性很强的R、G、B值转换为相关性较弱的H、S、V值，H和S分量与人感受色彩的方式相一致。HSV颜色空间可以用一个圆锥空间模型来描述.-In the color space, the distribution of skin color is more concentrated, have better sex with other distinguishable color scene, you can use the model to describe or samples to determine the method of learning. Differences in skin color image is mainly caused by light, in the detection consider only the chrominance information, you can reduce the effects of light, so that the distribution of color become more concentrated. By detecting an area of skin, the face can reduce the search range, to improve the detection speed. HSV space is a non-linear transformation of the RGB color space, it is a strong correlation between the original R, G, B values are converted to a weak correlation of H, S, V values, H and S component and the way people feel consistent color . HSV color space model can be used to describe a conical space