A new shape descriptor defined on the radon transform

Authors:
S. Tabbone;L. Wendling;J.-P. Salmon
Affiliations:
LORIA, Campus Scientifique, Vandæuvre-les-Nancy Cedex, France;LORIA, Campus Scientifique, Vandæuvre-les-Nancy Cedex, France;LORIA, Campus Scientifique, Vandæuvre-les-Nancy Cedex, France
Venue:
Computer Vision and Image Understanding
Year:
2006

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Abstract

This paper presents a novel approach to identify complex shapes based on the Radon transform. We propose an adaptation of Radon transform called R-transform, which is invariant to common geometrical transformations. Moreover, to improve the uniqueness of the approach, a binary shape is projected into the Radon space for different levels of the Chamfer distance transform. The accuracy and the efficiency of the proposed algorithm in the presence of a variety of transformations are evaluated within a shape recognition process.