Bivariate feature localization for SIFT assuming a Gaussian feature shape

Authors:
Kai Cordes;Oliver Müller;Bodo Rosenhahn;Jörn Ostermann
Affiliations:
Institut für Informationsverarbeitung, TNT, Leibniz Universität Hannover;Institut für Informationsverarbeitung, TNT, Leibniz Universität Hannover;Institut für Informationsverarbeitung, TNT, Leibniz Universität Hannover;Institut für Informationsverarbeitung, TNT, Leibniz Universität Hannover
Venue:
ISVC'10 Proceedings of the 6th international conference on Advances in visual computing - Volume Part I
Year:
2010

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Abstract

In this paper, the well-known SIFT detector is extended with a bivariate feature localization. This is done by using function models that assume a Gaussian feature shape for the detected features. As function models we propose (a) a bivariate Gaussian and (b) a Difference of Gaussians. The proposed detector has all properties of SIFT, but provides invariance to affine transformations and blurring. It shows superior performance for strong viewpoint changes compared to the original SIFT. Compared to the most accurate affine invariant detectors, it provides competitive results for the standard test scenarios while performing superior in case of motion blur in video sequences.