Add SPOT-like object for Python (overrides `__mul__` and works with scipy.sparse.linalg)

1 files changed, 0 insertions, 135 deletions

diff --git a/python/astra/ASTRAProjector.py b/python/astra/ASTRAProjector.py
deleted file mode 100644
index f282618..0000000
--- a/python/astra/ASTRAProjector.py
+++ /dev/null
@@ -1,135 +0,0 @@
-#-----------------------------------------------------------------------
-#Copyright 2013 Centrum Wiskunde & Informatica, Amsterdam
-#
-#Author: Daniel M. Pelt
-#Contact: D.M.Pelt@cwi.nl
-#Website: http://dmpelt.github.io/pyastratoolbox/
-#
-#
-#This file is part of the Python interface to the
-#All Scale Tomographic Reconstruction Antwerp Toolbox ("ASTRA Toolbox").
-#
-#The Python interface to the ASTRA Toolbox is free software: you can redistribute it and/or modify
-#it under the terms of the GNU General Public License as published by
-#the Free Software Foundation, either version 3 of the License, or
-#(at your option) any later version.
-#
-#The Python interface to the ASTRA Toolbox is distributed in the hope that it will be useful,
-#but WITHOUT ANY WARRANTY; without even the implied warranty of
-#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-#GNU General Public License for more details.
-#
-#You should have received a copy of the GNU General Public License
-#along with the Python interface to the ASTRA Toolbox. If not, see <http://www.gnu.org/licenses/>.
-#
-#-----------------------------------------------------------------------
-
-import math
-from . import creators as ac
-from . import data2d
-
-
-class ASTRAProjector2DTranspose():
-    """Implements the ``proj.T`` functionality.
-
-    Do not use directly, since it can be accessed as member ``.T`` of
-    an :class:`ASTRAProjector2D` object.
-
-    """
-    def __init__(self, parentProj):
-        self.parentProj = parentProj
-
-    def __mul__(self, data):
-        return self.parentProj.backProject(data)
-
-
-class ASTRAProjector2D(object):
-    """Helps with various common ASTRA Toolbox 2D operations.
-
-    This class can perform several often used toolbox operations, such as:
-
-    * Forward projecting
-    * Back projecting
-    * Reconstructing
-
-    Note that this class has a some computational overhead, because it
-    copies a lot of data. If you use many repeated operations, directly
-    using the PyAstraToolbox methods directly is faster.
-
-    You can use this class as an abstracted weight matrix :math:`W`: multiplying an instance
-    ``proj`` of this class by an image results in a forward projection of the image, and multiplying
-    ``proj.T`` by a sinogram results in a backprojection of the sinogram::
-
-        proj = ASTRAProjector2D(...)
-        fp = proj*image
-        bp = proj.T*sinogram
-
-    :param proj_geom: The projection geometry.
-    :type proj_geom: :class:`dict`
-    :param vol_geom: The volume geometry.
-    :type vol_geom: :class:`dict`
-    :param proj_type: Projector type, such as ``'line'``, ``'linear'``, ...
-    :type proj_type: :class:`string`
-    """
-
-    def __init__(self, proj_geom, vol_geom, proj_type):
-        self.vol_geom = vol_geom
-        self.recSize = vol_geom['GridColCount']
-        self.angles = proj_geom['ProjectionAngles']
-        self.nDet = proj_geom['DetectorCount']
-        nexpow = int(pow(2, math.ceil(math.log(2 * self.nDet, 2))))
-        self.filterSize = nexpow / 2 + 1
-        self.nProj = self.angles.shape[0]
-        self.proj_geom = proj_geom
-        self.proj_id = ac.create_projector(proj_type, proj_geom, vol_geom)
-        self.T = ASTRAProjector2DTranspose(self)
-
-    def backProject(self, data):
-        """Backproject a sinogram.
-
-        :param data: The sinogram data or ID.
-        :type data: :class:`numpy.ndarray` or :class:`int`
-        :returns: :class:`numpy.ndarray` -- The backprojection.
-
-        """
-        vol_id, vol = ac.create_backprojection(
-            data, self.proj_id, returnData=True)
-        data2d.delete(vol_id)
-        return vol
-
-    def forwardProject(self, data):
-        """Forward project an image.
-
-        :param data: The image data or ID.
-        :type data: :class:`numpy.ndarray` or :class:`int`
-        :returns: :class:`numpy.ndarray` -- The forward projection.
-
-        """
-        sin_id, sino = ac.create_sino(data, self.proj_id, returnData=True)
-        data2d.delete(sin_id)
-        return sino
-
-    def reconstruct(self, data, method, **kwargs):
-        """Reconstruct an image from a sinogram.
-
-        :param data: The sinogram data or ID.
-        :type data: :class:`numpy.ndarray` or :class:`int`
-        :param method: Name of the reconstruction algorithm.
-        :type method: :class:`string`
-        :param kwargs: Additional named parameters to pass to :func:`astra.creators.create_reconstruction`.
-        :returns: :class:`numpy.ndarray` -- The reconstruction.
-
-        Example of a SIRT reconstruction using CUDA::
-
-            proj = ASTRAProjector2D(...)
-            rec = proj.reconstruct(sinogram,'SIRT_CUDA',iterations=1000)
-
-        """
-        kwargs['returnData'] = True
-        rec_id, rec = ac.create_reconstruction(
-            method, self.proj_id, data, **kwargs)
-        data2d.delete(rec_id)
-        return rec
-
-    def __mul__(self, data):
-        return self.forwardProject(data)