A robust corner matching technique
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Lu, Guojun
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Beijing, China
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Abstract
In contour-based comer detectors, absolute curvature values of many corners either remain unaltered or change slightly under affine transformations. Moreover, affine-length of a curve is relatively invariant to affine transformations. This paper presents a novel corner matching technique using corners detected by contour-based detectors. For each corner we use its position, absolute curvature value, and affine-lengths between this corner and other corners on the same curve. The iterative matching procedure tries to find three corner matches with minimum absolute curvature difference to calculate affine transformation parameters. Original corners are transformed with the estimated parameters prior to matching with the test corner set.
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2007 IEEE International Conference on Multimedia and Expo
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© 2007 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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Subject
Computer vision and multimedia computation
Science & Technology
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Computer Science, Artificial Intelligence
Engineering, Electrical & Electronic
Imaging Science & Photographic Technology
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Awrangieb, M; Lu, G, A robust corner matching technique, 2007 2007 IEEE International Conference on Multimedia and Expo, pp. 1483-1486