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Watermarking Schema for Digital Still Images Based on Geometrical Transformation

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Author(s): Aca Micić | Sasa Nikolić | Vidosav Stojanović

Journal: Facta Universitatis Series : Electronics and Energetics
ISSN 0353-3670

Volume: 17;
Issue: 2;
Start page: 251;
Date: 2004;
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Keywords: Watermarking | cryptography | DCT | copyright protection | still images

ABSTRACT
In real time watermarking applications robustness and computational complexity are playing very important role. In this paper we focus on new algorithm for watermarking images. This algorithm is based on simple but efficient geometrical transformation of image and has fast embedding and extracting watermark pattern with acceptable robustnessity. Proposed method is illustrated on one example. It has been shown that it is possible to confirm existing of watermark also in JPEG compressed image.
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