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This work proposes a reversible data hiding algorithm for color BMP image that is based on the block difference histogram. The method divides the color BMP image into non-overlapping 3 by 3 pixels blocks. In each block, the specified pixel is selected to calculate absolute differences between the RGB color value of the selected pixel and that of the other pixels. Then, these differences are used to...
This work proposed a reversible data hiding algorithm that is based on the interleaving max-min difference histogram. The method divides the cover image into non-overlapping identical blocks. In each block, the maximum or minimum pixel is selected to calculate absolute differences between the gray level value of the selected pixel and that of the other pixels. Then, these differences are used to generate...
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