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Content-adaptive image steganography means that steganographer chooses embedding positions based on image textures. Steganalyst can also focus on detecting these positions according to image textures. Game theory is preferred to analyze the above situation. However, in previous game models, steganalyst will mistakenly identify that no bit is embedded, when the secret bit is the same as the least significant...
In this paper, a novel image steganographic method with four pixel-value-differencing and multiple-base notational is proposed. It processes non-overlapping 2 × 2 pixels blocks, and the features of edge can be considered sufficiently. Secret data, dynamically expressed as different digits in multiple-base, are embedded into each four-pixel block by adaptively applying exploiting modification direction...
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