Although steganography -- the practice of hiding a secret message within an innocuous cover mediu...
|19 Jun 2009||MATLAB Central Team||
Although steganography -- the practice of hiding a secret message within an innocuous cover medium -- is hardly new, detecting the presence of hidden messages has become considerably more difficult with the advent of high-resolution digital images as carriers.
We have been developing statistical techniques to detect (but not necessarily decipher) the presence of hidden messages within a digital image. The basic approach works by finding predictable higher-order statistics of "natural" images within a multi-scale decomposition, and then showing that embedded messages alter these statistics.
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|data hiding||SAUD||19 Sep 2011 at 2:59am|
|data hiding steganography||SAUD||19 Sep 2011 at 2:58am|
|steganography||SAUD||19 Sep 2011 at 2:58am|
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|image processing||MATLAB Central Team||19 Jun 2009 at 10:22am|