Memory Allocation about pygrappa HOT 2 OPEN

I will take a look at this, I believe the issue is most likely due to a call to skimage.util.view_as_windows over a large portion of that window which blows up the size. There is likely a way to refactor this to do this iteratively

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Thanks for your answer, it was at the memory allocation for the S array that it showed me that it could not allocate 471 GB,
When I changed the kernel size to (3, 3, 3) instead of (5, 5, 5), and the ACS to (252, 52, 33, 48), there is no longer this problem, even if I think that the size of the S-matrix has nothing that could be related to the kernel (if I'm not mistaken).

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