How to predict AC coefficients in transform compression?

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Anitha Raj
Anitha Raj on 6 Jan 2014
Sir, I have found the fft of an image and then trying to perform compression so that Compression ratio is numel(I)/numel(non zero fft coefficients).In the transform domain I want to retain only DC coefficients and filter AC coefficients so that I can code less co efficients for transmission and at the decoder end I want to predict AC coefficients.Iam not able to find how to predict AC coefficients at the decoder end.Please help me

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