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Robust template matching for affine resistant image watermarks |
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Published in | IEEE transactions on image processing. 2000, vol. 9, no. 6, p. 1123-1129 | |
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. We present an approach for embedding a digital watermark into an image using the Fourier transform. To this watermark is added a template in the Fourier transform domain to render the method robust against general linear transformations. We detail a new algorithm based on polar maps for the accurate and efficient recovery of the template in an image which has undergone a general affine transformation. We also present results which demonstrate the robustness of the method against some common image processing operations such as compression, rotation, scaling, and aspect ratio changes. | |
Keywords | Fourier transforms — Copyright — data compression — decoding — image coding — image matching — security of data — transform coding | |
Identifiers | DOI: 10.1109/83.846253 | |
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Research groups | Computer Vision and Multimedia Laboratory Multimodal Interaction Group | |
Citation (ISO format) | PEREIRA, Shelby, PUN, Thierry. Robust template matching for affine resistant image watermarks. In: IEEE transactions on image processing, 2000, vol. 9, n° 6, p. 1123-1129. doi: 10.1109/83.846253 https://archive-ouverte.unige.ch/unige:47477 |