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is my idea of using a function in em2.m, here is correct?? because i am getting an error,, unknown c0. here i am trying to insert bits of wm into hi.... basically im doing lsb watermarking using function

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Jan
Jan 2014-9-21
编辑：Jan 2014-9-21

0 个投票

You export the variables c0, c1, ... from your function, but you do not import it in the main function. So replace
a=my_mod_idea(m,n);
by
[c0,c1,c2,c3,c4,c5,c6,c7] = my_mod_idea(m,n)
Note: Your code will run much faster, if you read the file once in the main function and provide wm as input argument to the my_mod_idea function.
The line
bitset(hi(i,k),1,c0);
does not store the results anywhere. I guess you want:
hi(i,k) = bitset(hi(i,k),1,c0);

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SHALU SINGH
SHALU SINGH 2014-9-22
编辑：SHALU SINGH 2014-9-22
well..!! thank you, now its work correctly, but now i get problem in extracting an image, here i am using bitget function but it give a blurred image.. should i write a code as i write a code for embedding an image.

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