Patent ID: 8842213

Claim:
An image determination device that searches for an image of a person in a captured image, comprising: a search unit that searches for a set of a first region and a second region in the captured image according to a predetermined search condition, the first region potentially including an image of an entire body of the person and the second region potentially including an image of a predetermined body part of the person; and a determination unit that determines whether or not the search by the search unit is successful, wherein the search according to the predetermined search condition by the search unit, for detecting each of the first region and the second region in the captured image, comprises: dividing the captured image into a plurality of search regions by using a window; calculating an evaluation value for each of the search regions; and performing a first comparison, for each of the search regions, of comparing the evaluation value with a threshold value, the determination unit determines whether or not the search by the search unit is successful according to a result of the first comparison performed for each of the search regions, and when the determination unit determines that the search by the search unit is successful, the search unit performs a second comparison of comparing the evaluation value for at least one of the first region and the second region found through the search by the search unit and pertaining to the same person with a threshold value differing from the threshold value used in the first comparison, the search unit, by performing the second comparison, determining whether or not the at least one of the first region, which potentially includes the photographic object image, and the second region, which potentially includes the partial image, includes the corresponding image.