DEVICE AND METHOD THAT COMPARE FACIAL IMAGES

A first normalizing means generates a first normalized image by performing a normalizing process with fixed aspect ratios on given facial images. A feature extracting means generates feature images including features to be used for comparing faces, from the first normalized image. A second normalizing means generates a second normalized image by performing a normalizing process with variable aspect ratios on the feature images. A first comparing means calculates a first comparing result as an index as to whether or not faces in two images belong to one person, using the feature images. A second comparing means calculates a second comparing result as an index as to whether or not the faces in the two images belong to one person, using the second normalized image. A judging means judges whether or not the faces in the two images belong to one person, based on the first and second comparing result.