Locating an affine/projective invariant identifier patch on animage

摘要

Single view recognition is encountered in manyphoto-identification applications. Often a query image is retrieved bysearching a database of previously identified images. Important markingsand patterns are often located in a particular area of the object. Thispaper presents a method to locate an invariant patch on an image usingfew points in correspondence and few invariant ratios. Computation ofratios is simple and intuitive both geometrically and analytically. Onceratios are computed for an appropriate multilateral patch, the sameratios can be used on other images to locate the same identifier patch.In particular, this method is deployed to obtain the same area ofinterest on spotted dolphins