nabu.thirdparty.tomopy_phase module

Module for phase retrieval.

This code is part of tomopy: https://github.com/tomopy/tomopy It was adapted for being stand-alone, without job distribution. See the license above for more information.

nabu.thirdparty.tomopy_phase.retrieve_phase(tomo, pixel_size=0.0001, dist=50, energy=20, alpha=0.001, pad=True, ncore=None, nchunk=None)[source]

Perform single-step phase retrieval from phase-contrast measurements.

Parameters:

  • tomo (ndarray) – 3D tomographic data.

  • pixel_size (float, optional) – Detector pixel size in cm.

  • dist (float, optional) – Propagation distance of the wavefront in cm.

  • energy (float, optional) – Energy of incident wave in keV.

  • alpha (float, optional) – Regularization parameter.

  • pad (bool, optional) – If True, extend the size of the projections by padding with zeros.

  • ncore (int, optional) – Number of cores that will be assigned to jobs.

  • nchunk (int, optional) – Chunk size for each core.

Returns:

Approximated 3D tomographic phase data.

Return type:

ndarray