Analyse the "Gibbs Phenomenon" from Image Data

4 views (last 30 days)
Philip on 21 May 2012
Slightly related to my previous post regarding the ringing artifact in compressed images, I have a question regarding the Gibb's Phenomenon, and am wondering if anyone has any experience with it. I would like to show that compressed images exhibit artifacts of this phenomenon (overshoot/undershoot). Wikipedia ( says that the Gibbs Phenomenon would force the fourier series to "exceed the height π/4 of the square wave by approx. 9%". - Can anybody tell me how can I model this from image data?
Ideally, it would be great to show the sine wave extracted from the image against an ideal (square) sine wave...

Answers (0)

Community Treasure Hunt

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

Start Hunting!