Reversible image watermarking based on histogram modification and virtual border

This paper proposed the reversible image watermarking based on histogram modification and virtual border to protect the digital image originality. The color histogram was used to embed the digital signature of image. The histogram was modified based on the payload, thus the changes can be minimized. The reversibility was obtained from the storing of changes in the LSB of virtual border. Finally, the analysis of the result will be discussed.