Abstract-This letter proposes a novel multibit assignment steganography for palette images, in which each gregarious color that possesses close neighboring colors in the palette is exploited to represent several secret bits. A method for producing a usable multibit assignment is presented. For any pixel with a gregarious color, a data-hider can always find a suitable neighbor of the original color that corresponds to a prefix of secret bit-sequence and then replaces the original color with the found neighboring color. Experiment results show that the proposed steganography provides a good payload-distortion performance. Index Terms-Multibit assignment, palette image, steganography.
Xinpeng Zhang and his colleagues proposed an approach called "multibit assignment steganography for palette images", in which each gregarious color that possesses close neighboring color in the palette is exploited to represent several secret bits REF .
Multibit Assignment Steganography in Palette Images
IEEE Signal Processing Letters
IEEE Signal Processing Letters
Computer Science