How to calculate spatial frequencies in fft2 of an image
31 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
I apply fft2 on an image and get amplitudes for each spatial frequency. But what are these frequencies? How can I calculate them, knowing the size of the image in pixels and the dimension of the area in km shown on the image? I need to get these frequencies as cycles per km. Thank you.
1 Commento
Aymane
il 24 Apr 2024
Comment estimer la fréquence spatiale prépondérante (module u et angle teta ) d'une image
Risposte (1)
Vedere anche
Categorie
Scopri di più su Fourier Analysis and Filtering in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!