| 摘要 |
<P>PROBLEM TO BE SOLVED: To detect a face image area from image data obtained by an imaging device such as a monitoring camera at high speed with a high face detection rate without increase in false detection rate. Ž<P>SOLUTION: A face likelihood calculation part 3 calculates a face likelihood by use of a first face detection algorithm in a detection area of input image data, and a face likelihood determination part 4 determines whether the face likelihood is not less than a threshold α. A face periphery likelihood calculation part 5 calculates a face periphery likelihood by use of a second face detection algorithm in a detection area having a face likelihood of the threshold α or more. The first face detection algorithm is a high-speed face detection algorithm, compared with the second face detection algorithm, and the second face detection algorithm has a high detection rate and a low false detection rate of the face image area, compared with the first face detection algorithm. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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