rotating image by using fourie transformation

2 vues (au cours des 30 derniers jours)
Michael Shapira
Michael Shapira le 18 Nov 2011
I know that Matlab has a command to rotate image, but I wander how can one rotate image by using fourie transformation by angle X. Does someone has an idea?

Connectez-vous pour répondre à cette question.

Réponses (1)

Walter Roberson
Walter Roberson le 18 Nov 2011
It is possible: see this paper: http://afni.nimh.nih.gov/sscc/staff/rwcox/23dw.ps
  2 commentaires
Michael Shapira
Michael Shapira le 18 Nov 2011
Thank you. I have a question
While 2D transformation is clear and done by fft2 command, not clear how to calculate Sigma statement since fft2 doesn't really returns l and m variables and what are the limits of sigma, It should start from lower bound and end at high bound , but it is not specified
Walter Roberson
Walter Roberson le 18 Nov 2011
Sorry, I didn't even know it was possible myself until I looked it up. I do not understand the technique.

Connectez-vous pour commenter.

Catégories

En savoir plus sur Geometric Transformation and Image Registration dans Help Center et File Exchange

Tags

Produits

Community Treasure Hunt

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

Start Hunting!

Translated by