An Iterative Template Matching Algorithm Using the Chirp-Z Transform for Digital Image Watermarking

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Reference

An Iterative Template Matching Algorithm Using the Chirp-Z Transform for Digital Image Watermarking

PEREIRA, Shelby, PUN, Thierry

Abstract

Digital watermarks have been proposed as a method for discouraging illicit copying and distribution of copyrighted material. This paper describes a method for the secure and robust copyright protection of digital images. The key contribution lies in the development of a fast iterative template matching algorithm based on log-log or log-polar maps. The algorithm exploits the properties of the Chirp-Z transform to obtain the accuracy needed in the detection of transformations in realistic watermarking applications. Test results verify the robustness of the method.

PEREIRA, Shelby, PUN, Thierry. An Iterative Template Matching Algorithm Using the Chirp-Z Transform for Digital Image Watermarking. Pattern Recognition , 2000, vol. 33, no. 1, p.

173-175

DOI : 10.1016/S0031-3203(99)00106-5

Available at:

http://archive-ouverte.unige.ch/unige:47478

Disclaimer: layout of this document may differ from the published version.

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