Patent ID: 8331630

Claim:
A face feature point detection device comprising: acquiring section that acquires image data for an image including an eye region containing an eye inside corner and an eye outside corner; position detection section that detects an eye inside corner first position and an eye outside corner first position by pattern matching in the image data acquired by the acquiring section; first computation section that, in a first eyelid profile model expressing an upper curve and a lower curve, with end points at the eye inside corner first position and the eye outside corner first position detected by the position detection section, and having an upper eyelid position determined on the upper curve as a first parameter and a lower eyelid position determined on the lower curve as a second parameter, computes for each value of the first parameter and each value of the second parameter a first likelihood expressing the degree of matching between the first eyelid profile model while changing the first parameter and the second parameter and an eyelid profile included in the image; second computation section that, in a second eyelid profile model of the first eyelid profile model having the highest first likelihood computed by the first computation section and having an eye inside corner position as a third parameter and an eye outside corner position as a fourth parameter, computes for each value of the third parameter and each value of the fourth parameter a second likelihood expressing the degree of matching between the second eyelid profile model while changing the third parameter and the fourth parameter and the eyelid profile included in the image; and position determination section that determines the position expressed by the third parameter and the position expressed by the fourth parameter in the second eyelid profile model at the highest second likelihood computed by the second computation section as the positions of an eye inside corner second position and an eye outside corner second position, respectively.