how to detect double compressed JPEG images using DCT coefficients?

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

Answers (0)

Asked:

on 28 Feb 2018

Commented:

on 28 Feb 2018

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!