| 摘要 |
A means 9 for extracting the characteristic of the multi-value image causes an extracting filter to perform spiral retrieval so as to extract a nostril region from an image of the face input by a CCD camera 2 so as to cause the nostril region to be stored in the binarized image memory 10. The eye retrieving range is specified by using, as a reference, the position of the nostrils which is an intermediate point of the positions of the centers of gravity of the nostrils in the binarized nostril region stored in the binarized image memory 10. Then, an extracting filter is used to extract an eye region from the image of the face so as to store the eye region in the binarized image memory 10. The opening/closing determining means 11 determines opening/closing of the eyes in accordance with the binarized eye region.
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