Pattern recognition apparatus and method therefor

摘要

A pattern recognition apparatus includes an image inputting unit, a face-area extracting unit, a face-characteristic-point detecting unit, a normalized-image generating unit, a subspace generating unit, a similarity calculating unit, a reference-subspace storing unit, a judging unit, and a display unit. The pattern recognition apparatus calculates an input subspace from an input pattern, calculates a reference subspace from a reference pattern, and sets, with respect to orthogonal bases Φ1, ..., ΦM of the input subspace and orthogonal bases Ψ1,..., ΨN of the reference subspace, an average of distances between Φi and Ψj (i=1, ..., M and j=1, ... , N) as a similarity, and performs identification using this similarity.