High pass (and low pass) image filters with cutoff in “cycles per image”
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I'm trying to filter images (high-pass and low-pass) for a psychological experiment but I don't understand how i must relate the cutoff frequency expressed in "cycles per image" to the actual filter parameters.
In particular I need to create a high-pass filter with a cutoff freq of > 24 cycles/image and a low-pass filter with a cutoff freq of < 6 cycles/image. The image size is 128x128.
Can someone please point me in the right direction?
0 commentaires
Réponses (1)
Jonas
le 1 Juil 2021
habe a look into this under frequency domain filtering. there you can see several functions that can be used like fwind2() and ftrans2()
come back if you are stuck again ;-)
0 commentaires
Voir également
Catégories
En savoir plus sur Image Processing Toolbox dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!