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With rapid development of multicast communication, multimedia share services have become one of the most important channels for steganography. In this paper, we extend traditional unicast steganography to multicast steganography, which is the covert communication of a single sender attempting to deliver different secret messages simultaneously to several receivers within the same cover object. The...
In this paper, an adaptive steganography algorithm based on block complexity and matrix embedding is proposed. The matrix embedding constructed by [8,3], [8,4] [8,5] [8,6] and [8,7] linear codes is taken as the basic embedding strategy. Each block with 2 × 4 pixels is used as a cover unit and its block complexity is computed by neighboring pixel difference. The embedding strategy sets are defined...
In this paper, an adaptive matrix embedding method is proposed for grayscale images. The 2×4 pixel block is taken as a cover unit. The local correlation of the block is used to determine the message bit amount and choose the corresponding matrix embedding strategy. The method can embed less in image parts with high local correlation and more in image parts with low local correlation. The experimental...
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