Journal
SIGNAL PROCESSING-IMAGE COMMUNICATION
Volume 17, Issue 10, Pages 825-848Publisher
ELSEVIER
DOI: 10.1016/S0923-5965(02)00084-X
Keywords
Fourier descriptor; shape; CBIR; retrieval
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Shape description is one of the key parts of image content description for image retrieval. Most of the existing shape descriptors are usually either application dependent or non-robust, making them undesirable for generic shape description. In this paper, a generic Fourier descriptor (GFD) is proposed to overcome the drawbacks of existing shape representation techniques. The proposed shape descriptor is derived by applying two-dimensional Fourier transform on a polar-raster sampled shape image. The acquired shape descriptor is application independent and robust. Experimental results show that the proposed GFD outperforms common contour-based and region-based shape descriptors. (C) 2002 Elsevier Science B.V. All rights reserved.
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