Reversible data hiding giving priority to the use of edges and textures

We propose a new difference expansion (DE) embedding based reversible data hiding algorithm for digital images. Unlike other current DE-based algorithms that are primarily interested in using small pixel-pair differences (i.e., flat image regions) for data hiding, our algorithm gives priority to the use of image edges and textures. The experiments prove that our algorithm can produce visual image quality more suitable for human visual characteristics.