Patent Document ID: 20020176609
Application ID: 09931237
Patent Status: 0

Claim One:
1. A system for rapidly tacking multiple faces comprising: a face-like region generator having a skin region extractor and a motion analyzer, the skin region extractor generating a plurality of skin regions by detecting skin color pixels of an input image, the motion analyzer determining possible face-like regions from the skin regions based on moving information of the input image; a face recorder for recording tracked faces; a face status checker for checking the face-like regions and the faces previously tracked and recorded in the face recorder to determine whether the face-like regions are old faces which have been tracked in a previous frame or are possible new faces; a face verification engine for determining whether the possible new faces are true new faces; and a face tracking engine for tracking multiple faces based on the new and old faces, and the skin regions provided by the skin region extractor, wherein, when a tracked face is a new face, the face tracking engine directly adds the new face to the face recorder; when a tracked face is an old face, the face tracking engine determines whether there exists more than a predefined percentage of overlapping area between the old face and a skin region, and if yes, it is determined that the old face is still in the current frame and its position is in the center of the skin region, otherwise, the position of the old face is determined by correlation operation.