Patent ID: 8155398

Claim:
An image processing apparatus for performing an identification processing of an input face image, comprising: an image conversion section that receives an input of the face image to be identified, executes an image conversion on the input face image, and performs a normalization processing into an image having a predetermined setting, wherein the image conversion section obtains a face image from a first memory storing the face image to be normalization processed, performs the normalization processing by an image conversion and stores the face image after the normalization processing into a second memory; a calculation section that calculates a conversion parameter for calculating a corresponding point in the first memory to each pixel position in the second memory, the conversion parameter defining at least any one of an image contraction processing, an image rotation processing, or an image translation processing to be performed when the face image stored in the first memory is converted into the face image stored in the second memory; a similarity calculation section that calculates similarities between a feature quantity obtained from the converted input image in the image conversion section and a feature quantity of a registered face image; and matching determination means for determining whether the input face image matches the registered face image on the basis of the similarities calculated by the similarity calculation section, wherein the image conversion section executes the normalization processing by an image conversion processing using a center of right and left eyes of the input face image as an origin.