IMAGE CLASSIFICATION DEVICE, METHOD, PROGRAM, RECORDING MEDIA WITH PROGRAM THEREON, AND INTEGRATED CIRCUIT

According to a conventional image classification device that extracts a feature from an image and classifies the image with use of the extracted feature, in the case where one image and another one image, which are included in an image group, each have a different feature, the one image and the other one image might be each classified into a different category. In order to solve this problem, an image classification device relating to the present invention calculates, with respect to each of persons appearing in a plurality of images included in an image group which have been photographed with respect to one event, a main character degree that is an index indicating an important degree in units of image groups, and classifies the images into any one of different classification destination events in units of image groups based on the calculated main character degrees.