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• W2021875970 abstract "Most of the existing color image watermarking schemes use binary or gray-level image as watermark, and many of them belong to non-blind watermarking methods. It is a challenging problem to design a blind color image watermarking scheme. Based on QR decomposition, this paper proposes a novel blind image watermarking scheme to embed color watermark image into color host image, which is different from some existing works using the binary or gray-level image as watermark. Firstly, the color host image is divided to 4×4 non-overlapping pixel blocks. Then, each selected pixel block is decomposed by QR decomposition and the first row fourth column element in the matrix R is quantified for embedding the watermark information. In the extraction procedure, the watermark can be extracted from the watermarked image without the requirement of the original host image or the original watermark image. Experimental results, compared with the related existing methods, show that the proposed color image scheme has stronger robustness against most common attacks such as image compression, filtering, cropping, noise adding, blurring, scaling and sharpening etc." @default.
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• W2021875970 date "2014-01-01" @default.
• W2021875970 modified "2023-10-10" @default.
• W2021875970 title "Color image blind watermarking scheme based on QR decomposition" @default.
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• W2021875970 doi "https://doi.org/10.1016/j.sigpro.2013.06.025" @default.
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