Copyright Protection of Palette Images by a Robust Lossless Visible Watermarking Technique
نویسندگان
چکیده
A method for robust lossless visible watermarking of palette images for copyright protection against watermark removal attacks is proposed. A visible opaque watermark is embedded into a palette image according to a color mapping which is reversible. The embedded watermark can be losslessly removed when the original image is needed. And the proposed method is made robust against watermark removal attacks by a scheme of a two-level color randomization in the watermark area using a user-specified key. Experimental results show the effectiveness and robustness of the proposed method.
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