After pointing out the weakness of the known palette-based image information hiding by palette matrix, a new spacial effective robust information hiding algorithm is proposed, which can resist the operation of ‘selec...After pointing out the weakness of the known palette-based image information hiding by palette matrix, a new spacial effective robust information hiding algorithm is proposed, which can resist the operation of ‘select all’, ‘copy’, ‘paste’ from cover to original, and can resist gently modification the palette matrix, and can resist the image format changed between true color image and palette-based image. The hiding capacity can reach 25% of the number of pixel index matrix. Due to the advisement of information hiding security an update algorithm is proposed at the end of the paper, with the capacity reduced and vision effect increased.展开更多
基金This work is supported by National"973"Project of China (No.G1999035804).
文摘After pointing out the weakness of the known palette-based image information hiding by palette matrix, a new spacial effective robust information hiding algorithm is proposed, which can resist the operation of ‘select all’, ‘copy’, ‘paste’ from cover to original, and can resist gently modification the palette matrix, and can resist the image format changed between true color image and palette-based image. The hiding capacity can reach 25% of the number of pixel index matrix. Due to the advisement of information hiding security an update algorithm is proposed at the end of the paper, with the capacity reduced and vision effect increased.
