| adjoint_dd_fanbeam_projection | Adjoint Ray-based forward Distance-Driven projection
(sinogram domain -> image domain)
|
| adjoint_fanbeam_projection | adjoint ray-based fanbeam projection using nearest neighbor/linear interpolation.
(sinogram domain -> image domain).
|
| adjoint_parabeam_projection | Computes the adjoint of the parallel beam projection (sinogram domain -> image domain).
The adjoint is not the same as the backward projection, however a reconstruction can be
obtained using e.g. the conjugate gradient algorithm.
|
| bpf_parabeam_reconstruction | Reconstruction using backprojection filtration algorithm
|
| cg_dd_fanbeam_reconstruction | Reconstruction using conjugate gradients - distance driven projections
and
|
| cg_fanbeam_reconstruction | Reconstruction using conjugate gradients - naive forward and adjoint projections
and
|
| cg_parabeam_reconstruction | Iterative reconstruction of parallel beam CT data using the conjugate gradients method
Uses the projectors and
|
| fan2para | Regridding from fan-beam to parallel-beam. This is useful for comparing to
the FBP reconstruction.
|
| fbp_design_reconstruction_filter | Design of a FBP reconstruction filter in the frequency domain
|
| fbp_parabeam_predict_noisevariance | Computation of the noise variance of the reconstructed image
for the FBP algorithm.
|
| fbp_parabeam_reconstruction | Reconstruction using filtered backprojection algorithm
|
| forward_dd_fanbeam_projection | Ray-based forward Distance-Driven projection: a reimplementation
of the Distance-Driven algorithm of De Man, although with a simplification:
(image domain -> sinogram domain)
One first important detail is the projection normalization (because the sum of
the weights of the rays that go through a point is not necessarily 1).
Here, we perform the normalization directly in the image domain, prior to
the forward projection. We can call this a PRE-normalization.
Correspondingly, in the adjoint projector ,
the normalization is performed in image domain, AFTER the projection.
|
| forward_fanbeam_projection | ray-based forward projection using nearest neighbor/linear interpolation
(image domain -> sinogram domain). A naive implementation.
|
| forward_parabeam_projection | Computes a forward parallel beam projection (image domain -> sinogram domain)
|