Matching Images to Models for Registration and Object Detection via Clustering

Authors:
George Stockman;Steven Kopstein;Sanford Benett
Affiliations:
MEMBER, IEEE, Department of Mathematics, Statistics, and Computer Science, American University, Washington, DC 20016/ LNK Corporation, College Park, MD 20740.;American Management Systems, Arlington, VA 22209.;Metrek Division, MITRE Corporation, McLean, VA 22124.
Venue:
IEEE Transactions on Pattern Analysis and Machine Intelligence
Year:
1982

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Abstract

A new technique is presented for matching image features to maps or models. The technique forms all possible pairs of image features and model features which match on the basis of local evidence alone. For each possible pair of matching features the parameters of an RST (rotation, scaling, and translation) transformation are derived. Clustering in the space of all possible RST parameter sets reveals a good global transformation which matches many image features to many model features. Results with a variety of data sets are presented which demonstrate that the technique does not require sophisticated feature detection and is robust with respect to changes of image orientation and content. Examples in both cartography and object detection are given.