linop.FFT

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linop.FFT#

class bartorch.linop.FFT#

Bases: LinearOperator

BART’s unitary Fourier transform along axes, centred by default.

Parameters:

  • shape (tuple of int) – The shape it transforms, C order.

  • axes (int or tuple of int) – Which axes to transform, as indices into shape; negative indices count from the end.

  • inverse (bool, default=False) – Transform the other way.

  • centred (bool, default=True) – Put the zero frequency in the middle, which is BART’s fftc.

Examples

>>> F = FFT((8, 16), axes=(-1, -2))
>>> F(x).shape
torch.Size([8, 16])

Also has the methods and properties of LinearOperator.

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