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I wana use key in this code butt how??
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load sculpture
imagesc(X)
colormap gray
[LoD,HiD] = wfilters('haar','d');
[cA,cH,cV,cD] = dwt2(X,LoD,HiD,'mode','symh'); subplot(2,2,1)
imagesc(cA)
colormap gray
title('Approximation')
subplot(2,2,2)
imagesc(cH)
colormap gray
title('Horizontal')
subplot(2,2,3)
imagesc(cV)
colormap gray
title('Vertical')
subplot(2,2,4)
imagesc(cD)
colormap gray
title('Diagonal')
댓글 수: 6
Jan
2018년 10월 24일
@Sultan Mehmood: The question is not specific enough to get answered. "Using key in DWT" could mean a variety of things and the readers cannot guess, what you need. I suggest to ask an internet search engine for "image encryption" at first.
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