Face meta-data generation and face similarity calculation

摘要

A face feature is extracted by a face feature extracting unit 121, a confidence index is extracted by a confidence index extracting unit 122, and then, they are outputted as a face meta-data. At a time of matching, by using the confidence index of the face meta-data, a distribution estimating unit 141 estimates the data of a parameter and the like with regard to a posterior distribution when the confidence index is obtained. A distance calculating unit 142 calculates a similarity between feature values. Consequently, the precision of face verification can be improved, thereby carrying out a practical face matching.