Spread Spectrum-Based Image Watermarking Resistant to Rotation and Scaling Using Radon Transform

In this paper, a novel multibit image watermarking scheme resistant to rotation and scaling attacks is presented. The Radon transform is used to correct the orientation of an image. Then the spread spectrum-based watermarking scheme which is scaling invariant is used to embed and extract the watermark message in the DCT domain of the corrected image. Experimental results show that the scheme possesses good robustness against rotation, scaling attacks and considerable robustness against typical image processing.

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