LR image about 3d-gan-superresolution HOT 7 OPEN

It uses FFT and IFFT.

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The super-resolution scale in this article is in three dimensions or two dimensions. Can the Fourier transform reduce the resolution simultaneously in three dimensions

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Yes, it can reduce in 3 dimensions. I've implemented it.

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Can you show me this part of the code? Many of the documents I have seen are only degrading the resolution by zeroing the outer part of the 3D k-space along two axes representing two MR phase encoding directions.

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Here. Let me know if there is a better method.

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I looked at your method and it seems to be truncated in both phase encoding directions.
imgfft = imgfft [:, y_center-x: y_center + x, z_center-x: z_center + x] .
This code should be used for K-space truncation. I want to know whether it can be truncated in all three dimensions.

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zeroing the outer part of the 3D k-space along two axes representing two MR phase encoding directions, then inverse Fourier transform will be better. The resulting image will be the same size as the hr image

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