how to detect double compressed JPEG images using DCT coefficients?
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I have a problem related to jpeg compression. How to detect double compressed images using DCT coefficients? Also it is said to plot the histograms for DCT coefficients at frequencies (1,1), (1,2), (2,1) and (2,2) positions. Please help me to do it
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Ajay Ganti
il 28 Feb 2018
the problem can be seen in the image that i'm attaching now also
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