Description: Data hiding has drawn increasingly extensive attention recently. Most multimedia data hiding techniques
modify and, hence, distort the cover media in order to insert the additional information. Even though the
distortion is often small and imperceptible to human visual systems (HVS), the original cover media usually
cannot be restored completely. In other words, they are noninvertible data hiding, which is not admissible to
some sensitive applications, such as legal and medical imaging. For these applications, reversible data hiding
is desired to extract the embedded data as well as to recover the original host signal. Reversible (also often
referred to as lossless, invertible , or distortion-free) data hiding has been a very active research subject in the
last a few year
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ID-ACTSTL-0603.ppt
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