Fourier Transform spatial resolution

2 Ansichten (letzte 30 Tage)
Lucrezia Cester
Lucrezia Cester am 4 Mai 2020
Kommentiert: Star Strider am 4 Mai 2020
Hello,
I have a gaussian fucntion whose output image is shown below. Each index in this figure is supposed to be = 1 cm.
Then I take the 2d FT of this function and I get an output as below.
my question is: now each index after the FT won't be 1 cm. How do I find the new spatial values?
Thank you very much.
  1 Kommentar
Star Strider
Star Strider am 4 Mai 2020
‘each index after the FT won't be 1 cm’
Correct. It will be in cycles / spatial unit, analogous to a 1D Fourier transform of a time-domain signal being in units of cycles / time unit. There are no new spatial values to find, only frequency values.

Melden Sie sich an, um zu kommentieren.

Melden Sie sich an, um diese Frage zu beantworten.

Antworten (0)

Kategorien

Mehr zu Read, Write, and Modify Image finden Sie in Help Center und File Exchange

Tags

Community Treasure Hunt

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

Start Hunting!

Translated by