Automatic image registration via clustering and convex hull vertices matching

Authors:
Xiangyu Yu;Hong Sun
Affiliations:
Signal Processing Lab, School of Electronics Information, Wuhan University, Wuhan, China;Signal Processing Lab, School of Electronics Information, Wuhan University, Wuhan, China
Venue:
ADMA'05 Proceedings of the First international conference on Advanced Data Mining and Applications
Year:
2005

Citing 2
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Abstract

A coarse-to-fine automatic point-based image registration method is proposed in this paper. At the first stage, clustering is used to determine the scale parameter and the rotational parameter candidates between images. Convex hull vertices correlation is applied subsequently to determine the correct rotational parameter. With the coordinates of matched point pairs and the above parameters, the translational parameter and the coarse registration result can be determined. At the second stage, control point pairs, which determine parameters of mapping polynomial, are formed by iterative convex hull vertices matching. Thus the registration result is refined. Experiments indicate that this approach can automatically align images in different resolutions.