LAUSR

Protecting the security of information transmission over the Internet has become a critical contemporary issue. Compressed images are now widely used in mobile devices and the Internet cloud due to low storage requirements; therefore, many researchers have treated compressed images as a popular carrier in studies of studied reversible data hiding (RDH) schemes. However, the hiding capacity and image quality offered by the reversible data hiding schemes designed for a compression domain are all still limited. To reverse this situation, this paper presents an adaptive reversible data hiding scheme for absolute moment block truncation coding (AMBTC) compressed image using a pixel-value adjusting strategy. Experimental results confirm that the proposed scheme outperforms in both hiding capacity and image quality compared with prior AMBCT-based RDH schemes.