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In this paper, we propose an information hiding scheme to embed secret information into the compression code of an index table. First, the codewords neighboring the current processed index along with their closest codewords form a state codebook. Two indices of the state codebook are reserved as indicators. Once the current processed index satisfies some pre-defined conditions, the current processed...
In this paper, we propose a simple reversible data hiding method in spatial domain for digital images by exploiting the correlation characteristic of neighboring pixels in natural images. The proposed method embeds several secret bits into a block of two consecutive cover pixels whose values are equal. The experimental results show that the proposed method achieves very good visual quality at low...
The advances of network technologies and digital devices facilitate users to exchange multimedia data over the public networks. However, this also raises significant concerns about how to protect sensitive multimedia data from being illegally modified. Therefore, this paper proposes a fragile watermarking scheme to detect illegitimate alterations of a watermarked image. The proposed method hides a...
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