sigpy.linop.NUFFT

class sigpy.linop.NUFFT(ishape, coord, oversamp=1.25, width=4, toeplitz=False)

NUFFT linear operator.

Parameters:

• ishape (tuple of int) – Input shape.
• coord (array) – Coordinates, with values [-ishape / 2, ishape / 2]
• oversamp (float) – Oversampling factor.
• width (float) – Kernel width.
• toeplitz (bool) – Use toeplitz PSF to evaluate normal operator.

__init__(ishape, coord, oversamp=1.25, width=4, toeplitz=False)

Initialize self. See help(type(self)) for accurate signature.

Methods

__init__(ishape, coord[, oversamp, width, …])	Initialize self.
apply(input)	Apply linear operation on input.

Attributes

H	Return adjoint linear operator.
N	Return normal linear operator.