  Reversible data hiding (RDH) is one special type of information hiding, by
which the host sequence as well as the embedded data can be both restored from
the marked sequence without loss. Beside media annotation and integrity
authentication, recently some scholars begin to apply RDH in many other fields
innovatively. In this paper, we summarize these emerging applications,
including steganography, adversarial example, visual transformation, image
processing, and give out the general frameworks to make these operations
reversible. As far as we are concerned, this is the first paper to summarize
the extended applications of RDH.
