Fourier Transform spatial resolution

4 views (last 30 days)
Lucrezia Cester
Lucrezia Cester on 4 May 2020
Commented: Star Strider on 4 May 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 Comment
Star Strider
Star Strider on 4 May 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.

Sign in to comment.

Answers (0)

Community Treasure Hunt

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

Start Hunting!