Is PVD steganography be used for hiding only text or can it also be used for hiding color image inside color cover image?

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Anushka
Anushka 2015-9-28
评论： Walter Roberson 2015-9-29
Is PVD steganography be used for hiding only text or can it also be used for hiding color image inside color cover image?

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Walter Roberson
Walter Roberson 2015-9-29
This is not a MATLAB question, and should have been researched in a different forum. MATLAB Answers is about the MATLAB language and libraries, not about theory or algorithms. You should have done research, not re-opened the question.
The answer to your question is that any set of data that can be represented on a computer is ultimately represented as a sequence of bits. The "text" gets transformed to a sequence of bits and the bits are hidden in steganography. RGB images can be transformed into sequence of bits:
temp = dec2bin(YourRGBImage,8)-'0';
bitvector = reshape(temp.',[],1);
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Anushka
Anushka 2015-9-29
编辑：Anushka 2015-9-29
Yes that only I meant,that is if an digital image can be hidden inside cover image using PVD. And I know that PVD is an steganography method so it is sure that the color image that I mentioned in the question was mentioning an digital image and not as an object.After checking many papers I thought PVD can only be used to hide binary values so to clear that doubt I just asked the question.
Walter Roberson
Walter Roberson 2015-9-29
Anything that can be expressed in finite binary can be hidden, provided the cover image is large enough. The hiding algorithms do not care what the bits mean.

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