Asymmetric Orientation Combination for Reversible and Authenticable Data Hiding of Dual Stego-images

A dual-image-based reversible data hiding (RDH) scheme can conceal secret into a cover image by creating two steganographic images. These stego-images cooperate to extract and restore the image. This paper describes generalization of orientation combination technology for RDH. We first propose full search algorithm find optimal set combinations. Based on algorithm, modification range pixel values be dynamically enlarged, thus embedding capacity becomes adjustable. In addition, an authentication is provided detect tampered shadows based faithful one. Experimental results confirm that proposed produce dual with good visual quality. Furthermore, our method provides adjustable payload. lot more embedded than state-of-the-art methods, satisfactory Two steganalysis tools are applied demonstrate security level scheme.