US 2002/0176609 A1Published application

System and method for rapidly tacking multiple faces

AssigneeIndustrial Technology Research Institute

InventorsChun-Wei Hsieh, Yea-Shuan Huang

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Abstract

A system and a method for rapidly tacking multiple faces are disclosed. A face-like region generator finds a face-like region by skin color, motion, and silhouette information. A face tracking engine tracks faces based on new and old faces, and skin colors provided by the face-like regions. The tracked face is fed into a face status checker for determining whether the face-like regions are old faces tracked in a previous frame or are possible new faces. If the face-like regions are old faces, a face verification engine checks whether there exists a predefined percentage of overlapping area between an old face and a skin region. If yes, 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 found by a correlation operation.

Claims23

Dependent claims

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.

4 more elements

A method for rapidly tacking multiple faces comprising the steps of:

(A) detecting skin color pixels of an input image for generating a plurality of skin regions;
(B) determining possible face-like regions in the skin regions based on moving information of the input image;
(C) checking the face-like regions and tracked faces previously stored to determine whether the face-like regions are old faces that have been tracked in a previous frame or are possible new faces, wherein, if the face-like regions are old faces, it is further determined whether there exists more than a predefined percentage of overlapping area between an old face and a skin region, and if yes, the old face are still in the current frame and its position is the center of the skin region, otherwise, the position of the old face is determined by correlation operation;
and
(D) determining whether the possible new face is a true new face, and if yes, recording the new face.

2 more elements

Dependencies are inferred from the claim text.