decoding code for the bitmap image

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hari prasad
hari prasad 2015 年 10 月 16 日
回答済み: Image Analyst 2015 年 11 月 25 日
Sir can u plzz give the code to decode that bitmap image n get the text hidden it

回答 (3 件)

Image Analyst
Image Analyst 2015 年 10 月 16 日
Search VisionBib or the internet for papers on steganography or watermarking.

Walter Roberson
Walter Roberson 2015 年 10 月 16 日
No. In order to retrieve the hidden information, you need to know how it was hidden.
If you were to somehow determine which bits had been altered compared to the original image, and if you also knew somehow which bits happened to be changed to the same thing they were before (e.g., a '1' was stored but it already happened to be a '1'), then you would be able to get a set of bits and values out. However, that would not tell you anything about the order the bits should be used in. Does it say "own goal" or does it say "law goon" ?

Image Analyst
Image Analyst 2015 年 11 月 25 日
I've written a very simple steganography demo. It's in my File Exchange, so check it out: http://www.mathworks.com/matlabcentral/fileexchange/54155-steganography-hide-text-in-image

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