1. An information processing device comprising: input means for receiving a facial image; reliability calculation means for generating, based on a plurality of classifiers for computing the suitability of feature points of a face, a reliability image indicating the suitability for each feature point from the facial image; candidate position calculation means for obtaining a candidate position of the feature point in the facial image based on the reliability image; and conformity calculation means for determining a feature point that satisfies conditions based on a position corresponding to each of the feature points of one facial shape model selected from a plurality of statistically generated facial shape models and the candidate position of the feature point calculated by the candidate position calculation means, and for calculating a conformity to the facial shape model.