Region-based indexing in an image database

Image retrieval systems based on the image-query-by-example paradigm locate their answer set using a similarity measure of the query image with all images stored in the database. Although this approach generally works for quick re-location of `identical' or partly occluded images, it does not support the more interesting query type aimed at finding images with a particular image fragment. In this paper we introduce a regionbased indexing scheme to support retrieval of images on the basis of both global and local image features.