Information hiding in dual images with reversibility

[[abstract]]Secret information protection has received increasing attention from the information technology community. Proposing a novel information hiding scheme to effectively conceal secret information in various applications is encouraged. In this paper, we proposed a novel reversible information hiding scheme by embedding secret information into dual image. The proposed scheme first converts the secret bit stream into secret digits in the base-5 numeral system. Then, two secret digits are embedded into one pixel pair at a time by distributing them into a dual image (i.e. two stego images). The experimental results show that the proposed scheme achieves high embedding capacity and good visual quality of stego images. © 2009 IEEE