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...

Analyse the "Gibbs Phenomenon" from Image Data

2 vues (au cours des 30 derniers jours)

Philip le 21 Mai 2012

0
Lien

Utiliser le lien direct vers cette question

https://fr.mathworks.com/matlabcentral/answers/38976-analyse-the-gibbs-phenomenon-from-image-data

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 ( http://en.wikipedia.org/wiki/Gibbs_phenomenon#Description) 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...