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Transparent robust image watermarking
Swanson, M.D.; Bin Zhu; Tewfik, A.H.;
Image Processing, 1996. Proceedings., International Conference on
Volume 3,
16-19 Sept. 1996
Page(s):211
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214 vol.3
Abstract:
We propose a watermarking scheme to hide copyright information in an image. The scheme employs visual masking to guarantee that the embedded watermark is invisible and to maximize the robustness of the hidden data. The watermark is constructed for arbitrary image blocks by filtering a pseudo-noise sequence (author id) with a filter that approximates the frequency masking characteristics of the visual system. The noise-like watermark is statistically invisible to deter unauthorized removal. Experimental results show that the watermark is robust to several distortions including white and colored noises, JPEG coding at different qualities, and cropping
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