i hide a text into an image by using lsb algorithm successfully..now i want to retrive the txt from the stegno image by the same algorithm..how can i retrieve the text

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hemalatha on 25 Dec 2014

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Answered: Parameswaran Bose on 27 Dec 2014

stegenography using lsb algorithm

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Geoff Hayes on 27 Dec 2014

I don't think that you use the same algorithm but one that just reverses the steps in the other. Try working backwards from the other code.

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Answer 1

Parameswaran Bose on 27 Dec 2014

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Hi, I have done message hiding with image by using java, since I don't have matlab coding knowledge, I will give you the text retrieval from image code in java

        int byteCount = 0;
        for(int i=0;i<fileBytes.length;i++){
            for(int j=0; j<8; j++) {
                fileBytes[i] = (byte)((fileBytes[i] << 1) | (colorBytes[byteCount] & 1));
                byteCount++;
            }
        }