robbietuk

CLI projector utilites with cache use excessive memory for block geometries

5

Running the CLI command: ``` back_project bp_ones_cli ones.hs ones.hv ``` uses the default configuration of `BackProjectorByBin` (e.g. `BackProjectorByBinUsingProjMatrixByBin`). This data being projected is non-TOF and short axial FOV (nothing excessive...

Feature suggestions for ProjData Visualization

2

Relevant directory: https://github.com/UCL/STIR/tree/master/examples/python/projdata_visualisation #1319 Added a TOF slider. The following are suggestions of changes to be made to ProjData Visualization Further TOF improvements: - [ ] Add a checkbox to...

This is more of a discussion point than an issue. That was first mentioned here: #1321 https://github.com/UCL/STIR/issues/1320#issuecomment-1887955732 w.r.t accessing non-TOF sinograms/viewgrams from TOF data without having to load each TOF...

## Changes in this pull request Introduces the ability to set and retrieve a forward projector for scatter estimation, used in mask forward projection, in the ScatterEstimation class. Also adds...

EstimateScatter forces the use of ForwardProjectorByBinUsingProjMatrixByBin for mask computation

2

Attempting to estimate scatter from a CT attenuation map, many small voxels. This leads to an issue with the `ForwardProjectorByBinUsingProjMatrixByBin` as https://github.com/UCL/STIR/blob/454be92288d3eac39bbaf79fd8bfdd1c71937521/src/recon_buildblock/DataSymmetriesForBins_PET_CartesianGrid.cxx#L74-L79 I am generally using parallelproj that avoids this...

Core dump while trying to access Scanner object created for an unknown scanner

3

Found this issue in an code base. I can replicate the issue with a modification of `using_installed_STIR` C++ example https://github.com/UCL/STIR/tree/master/examples/C%2B%2B/using_installed_STIR ## Setup Fresh STIR clone, build and install, most options...

STIR CMake cache does not store dependancy paths

1

STIR's dependency paths need defining in CMake projects using STIR. Trying to use https://github.com/UCL/STIR/blob/master/examples/C%2B%2B/using_installed_STIR/CMakeLists.txt as my guide. The examples below shows the common steps I have to go through to...

MLEstimateComponentBasedNormalisation refactor

18

## Changes in this pull request WIP Refactor of `ML_estimate_component_based_normalisation`. - Created a class. - Simplified the system logic - Add the ability option to save the data or not...

This is an summary of the issue discussed in [#1499 ](https://github.com/UCL/STIR/pull/1499), specifically from https://github.com/UCL/STIR/pull/1499#issuecomment-2330236446 onwards. This is an issue for scanners with an even number of tangential positions because the...

`ML_estimate_component_based_normalisation` and `apply_norm_factors3D` cannot be used without saving to disk

4

These are executable files for computing normalization and a brief description of how they are implmented: - [`find_ML_normfactors3D`](https://github.com/UCL/STIR/blob/master/src/utilities/find_ML_normfactors3D.cxx): calls [`ML_estimate_component_based_normalisation`](https://github.com/UCL/STIR/blob/master/src/recon_buildblock/ML_estimate_component_based_normalisation.cxx) and the single function there. Additionally, the documentation in [`ML_estimate_component_based_normalisation.h`](https://github.com/UCL/STIR/blob/master/src/include/stir/recon_buildblock/ML_estimate_component_based_normalisation.h)...