backprojection: backprojection algorithm#
- class Backprojection(sino_shape, slice_shape=None, axis_position=None, angles=None, filter_name=None, ctx=None, devicetype='all', platformid=None, deviceid=None, profile=False, extra_options=None)[source]#
A class for performing the backprojection using OpenCL
- backprojection(sino, output=None)[source]#
Perform the backprojection on an input sinogram
- Parameters:
sino – sinogram.
output – optional, output slice. If provided, the result will be written in this array.
- Returns:
backprojection of sinogram
- filtered_backprojection(sino, output=None)[source]#
Compute the filtered backprojection (FBP) on a sinogram.
- Parameters:
sino – sinogram (np.ndarray or pyopencl.array.Array) with the shape (n_projections, n_bins)
output – output (np.ndarray or pyopencl.array.Array). If nothing is provided, a new numpy array is returned.