Local versus global features for content-based image retrieval

Abstract
It is now recognized in many domains that contentbasedimage retrieval (CBIR) from a database of imagescannot be carried out by using completely automatedapproaches. One such domain is medical radiologyfor which the clinically useful information inan image typically consists of gray level variationsin highly localized regions of the image. Currently,it is not possible to extract these regions by automaticimage segmentation techniques. To address thisproblem, we have implemented a...