How much should you zero pad an image before taking the fft ?

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raheem mian
raheem mian 2020-3-25
评论： raheem mian 2020-3-31
If i have an image that is 200x200 and I want to take the FFT how much zero padding is required ?

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Bhargavi Maganuru
Bhargavi Maganuru 2020-3-31
编辑：Bhargavi Maganuru 2020-3-31
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.

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