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This paper presents a new semi-blind robust image watermarking scheme based on most perceptually important sub-image (MPISI) of watermark and original image. The proposed method is based on lossless approach and to prevent false-positive watermark detection in this approach, a watermark certificate is inserted in the image. Therefore, the proposed method has two phases; in the first phase, the MPISI...
An algorithm, which is based on the DCT domain, embedding a watermarking color image into a host color image is proposed to protect the copyrights of color images. The coordinates of R,G and B components are scrambled by logistic mapping before those components are embedded. Then the scrambled R,G and B components in color spaces are used as watermarking sequences. The host image blocks are classified...
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