An image retrieval system contains a database with a large number of images. The system retrieves images from the database that are similar to a query image entered by the user. The images in the database are grouped in clusters according to a similarity criterion so that mutually similar images reside...http://www.google.es/patents/US6285995?utm_source=gb-gplus-sharePatente US6285995 - Image retrieval system using a query image
