There is provided an image similarity calculation system which yields a large value for image similarity between an edited image and an original image. A local region weight calculation means 14 calculates a weight value for each local region in the image as a local region weight value, based on probability...http://www.google.com/patents/US7991232?utm_source=gb-gplus-sharePatent US7991232 - Image similarity calculation system, image search system, image similarity calculation method, and image similarity calculation program
