1. An image matching system for retrieving a reference image similar to an input image, the image matching system comprising: means for making a match between the input image and a plurality of representative three-dimensional object models; means for making a match between the reference image and the representative three-dimensional object models; and means for retrieving the reference image similar to the input image by using a result of the match between the input image and the representative three-dimensional object models and a result of the match between the reference image and the representative three-dimensional object models.