TOWARDS A BIOMETRIC PURPOSE IMAGE FILTER ACCORDING TO SKIN DETECTION

Skin detection is an important first step in face detection, recognition, facial expression extraction, face and hand tracking and other many recognition systems. For example in face detection with neural networks (NN), the NN processes every location of the image in order to detect faces anywhere. Before this process if skin detection is applied to the image, the NN only processes skin regions, so the performance of the system increases. As well as face detection with skin analysis, if the parameters changed, regions like hair, lips can be detected. In automatic lip reading, detecting only the lip region, for gender estimation detecting head and hair information is important. Also for age estimation skin analysis for wrinkle detection is required. The skin detector can also be used as the basis for an adult image detector [1]. There is a growing industry aimed at filtering and blocking adult content from web indexes and browsers.