trieval through Abstract Shape Indication A. Brucale, F. Cesari, M. d'Amico, M. Ferri, P. Frosini, L. Gualandri, M. Guerra, A. Lovato, I. Pace Dip. di Matematica, Universit`a di Bologna September 19, 2000 A new system for image retrieval is presented. The query is indicated by means of three pichich should span the abstract shape concept that the user has in mind. The search is accomplished by using a set of size functions, and giving them different weights, computed on the base of the three input images. The system has been tested on a database of 2976 synthetic images .