| The information hiding technology is a new research topic which isappearing and developing along with the rapid progress of internet andmultimedia. How to protect the author ownership of his multimediainformation is an important problem. Now the solution method is digitalwater marking, an essential subject of information hiding. Another subject ofinformation hiding is Data Stegano, also called Information Stegano.Information hiding means a Signature Signal embedding a Host Signal,and the Signature Signal couldn't be imperceptibility, the Signature Signalmaybe is a Secret message and Host Signal is also named cover media. So thesecret message and cover media is broadcast by public channel. All of theuser all could receive the information, but they couldn't found and pick upsecret message.Digital image information security is a new research topic which isappearing and developing along with the rapid progress of internet andmultimedia. Digital image information security involves with mathematics,cryptology, information theory, computer vision and other computer appliedtechniques. We will mainly research on hiding and covering algorithms ofdigital image information security, concluded in the following four facets:1. Digital image scrambling , it means to do a kind of replacement intheir spacial domain just like to one dimensional signal in classicalcryptology, or modify their frequency coefficients. Digital images willbecome disturbed after scrambling, and in this sense, protect their realcontent.2. Digital image information hiding is a subject of the most popularresearch topic called information hiding. For a given digital image which we... |
