1 research outputs found
Reversible data hiding based on reducing invalid shifting of pixels in histogram shifting
In recent years, reversible data hiding (RDH), a new research hotspot in the
field of information security, has been paid more and more attention by
researchers. Most of the existing RDH schemes do not fully take it into account
that natural image's texture has influence on embedding distortion. The image
distortion caused by embedding data in the image's smooth region is much
smaller than that in the unsmooth region, essentially, it is because embedding
additional data in the smooth region corresponds to fewer invalid shifting
pixels (ISPs) in histogram shifting. Thus, we propose a RDH scheme based on the
images texture to reduce invalid shifting of pixels in histogram shifting.
Specifically, first, a cover image is divided into two sub-images by the
checkerboard pattern, and then each sub-image's fluctuation values are
calculated. Finally, additional data can be embedded into the region of
sub-images with smaller fluctuation value preferentially. The experimental
results demonstrate that the proposed method has higher capacity and better
stego-image quality than some existing RDH schemes.Comment: 11 pages, 11 figures, 1 tabl