How much should you zero pad an image before taking the fft ?
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If i have an image that is 200x200 and I want to take the FFT how much zero padding is required ?
2 Comments
David Goodmanson
on 30 Mar 2020
Hi raheem, for what purpose might you want to use zero padding?
raheem mian
on 31 Mar 2020
Answers (1)
Bhargavi Maganuru
on 31 Mar 2020
Edited: Bhargavi Maganuru
on 31 Mar 2020
0 votes
If input signal of fft is not in the powers of 2, which is 200 in your case so, you can do zero padding till length is 256.
1 Comment
David Goodmanson
on 31 Mar 2020
Edited: David Goodmanson
on 31 Mar 2020
HI Bhargavi,
could you explain why going to a power of 2 is a good idea, or not?
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