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This paper proposes a new efficient and secure copyright protection scheme for digital watermarking by using visual cryptography technique. The proposed scheme has the following merits compare with previous related schemes: (1) The proposed scheme uses simple codebook to generate a watermarked image. (2) The proposed scheme does not need to expand the watermark image. (3) The proposed scheme eliminates...
In this paper, a simple and robust watermarking scheme is presented by using random mapping function. The idea of the proposed algorithm is watermark embedding which can be more robust than the traditional LSB technique. Using the proposed algorithm, it makes the secure random coordinate of cover image to increase the robustness of the watermarked image. Experimental results show that the quality...
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