基于肤色的人脸检测

he face detection is key technology in the field of face information processing, it' s widely applied in the fields of automated face recognition system, based on content index, video monitoring and human machine alternative technology. In color images,the skin-color is important information of face.It is stable,and independent of detail's changes.The skin-color has a good character of clustering in chroma space .According to this character,much background factor can be discarded quickly. Firstly,we analyze skin-color's clustering in the YCbCr color space,and establish a Gaussian model based on it.Secondly,a probability image is gained by calculating likelihood though the model.After threshold segmentation,rendering hole,and validating regions,the face regions are finally separated from the background.