<p>A face authentication device (1) that checks an input image (A1) obtained by photographing a person's face against a registered image database (21) containing registered images (R) that include facial feature data is provided with: the facial feature data (A11) for the input image (A1); an absolute evaluation unit (331) that calculates absolute evaluation scores between the facial feature data included in the registered images (R); a relative evaluation unit (334) that calculates relative evaluation scores indicating the degree to which one person registered in the registered image database (21) approximates the person of the input image (A1); an integrated evaluation unit that calculates integrated scores obtained by weighting and integrating the absolute evaluation scores and the relative evaluation scores; and an authentication result output unit (34) that verifies the input image (A1) on the basis of the integrated scores.</p>
