An image retrieval method and apparatus using iterative matching are provided. The method comprises: (a) extracting K similar images in order of matching rank by retrieving N reference images stored in an image database through comparison between a query image selected by a user and the reference images;...http://www.google.se/patents/US7298931?utm_source=gb-gplus-sharePatent US7298931 - Image retrieval method and apparatus using iterative matching