nabu.reconstruction.projection

Classes

Projector — A class for performing a tomographic projection (Radon Transform) using Cuda.

source class Projector(slice_shape, angles, rot_center=None, detector_width=None, normalize=False, extra_options=None, cuda_options=None)

A class for performing a tomographic projection (Radon Transform) using Cuda.

Initialize a Cuda tomography forward projector.

Parameters

slice_shape : tuple — Shape of the slice: (num_rows, num_columns).
angles : int or sequence — Either an integer number of angles, or a list of custom angles values in radian.
param rot_center : float, optional — Rotation axis position. Default is (shape[1]-1)/2.0.
detector_width : int, optional — Detector width in pixels. If detector_width > slice_shape[1], the projection data will be surrounded with zeros. Using detector_width < slice_shape[1] might result in a local tomography setup.
normalize : bool, optional — Whether to normalize projection. If set to True, sinograms are multiplied by the factor pi/(2*nprojs).
extra_options : dict, optional — Current allowed options: offset_x, axis_correction
cuda_options : dict, optional — Cuda options passed to the CudaProcessing class.

Methods

source method Projector.set_image(image, check=True)

source method Projector.projection(image, output=None, do_checks=True)

Perform the projection of an image.

Parameters