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extract 64 lowest frequency components of fft

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Elysi Cochin
Elysi Cochin 2021 年 5 月 22 日
回答済み: Sulaymon Eshkabilov 2021 年 5 月 24 日
How to extract 64 lowest frequency components using fourier transform of an image
fft2 or fftn which function to use, and how to get the 64 feature vector as fft2 and fftn returns a matrix ouput

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Sulaymon Eshkabilov
Sulaymon Eshkabilov 2021 年 5 月 24 日
Hi,
For image analysis, fft2 is to be used and that is quite straightforward.
Here is an additional help discussion on this:
Good luck.

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