Dual image-based reversible data hiding method using neighboring pixel-value referencing

Dual image-based reversible data hidings are recently proposed where dual copies of a cover image are used to embed the secret data. In this paper, a novel reversible data hiding method based on neighboring pixel-value differencing is proposed to increase embedding capacity with a good image quality. The mean value of neighboring pixels and the difference values are used to decide the size of embedding bits per the sub-block. The receiver can extract the secret data and recover the cover image from dual stego-images. The experimental results show that the proposed method has a higher capacity and still a good image quality where it could embed 767,922 bits and maintain 45.58 dB and 45.33 dB for dual images.

 

The Imaging Science Journal(SCIE), Vol. 63(7) (9.2015) 398-407