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A robust watermarking scheme based on mean quantization and human visual system is proposed. Different from conventional quantization methods, each watermark bit is embedded by quantizing the mean value of a coefficient block with size 2times2 so as to make the embedded watermark more robust, and the account of modification is decided according to the characteristics of human visual system to gain...
A novel blind watermarking technique based on back propagation neural networks is proposed. The proposed watermarking technique hides a scrambled watermark into an image, and takes HVS characteristics into consideration during the watermark embedding process, then uses a back propagation neural network to learn the characteristics of the embedded watermark related to the watermarked image. With the...
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