Symmetries appropriate for a (cylindrical) PET scanner, and a discretised density on a Cartesian grid. More...
#include "stir_experimental/recon_buildblock/DataSymmetriesForDensels_PET_CartesianGrid.h"
Public Member Functions | |
| DataSymmetriesForDensels_PET_CartesianGrid (const shared_ptr< const ProjDataInfo > &proj_data_info_ptr, const shared_ptr< const DiscretisedDensity< 3, float >> &image_info_ptr) | |
| DataSymmetriesForDensels_PET_CartesianGrid * | clone () const override |
| bool | operator== (const DataSymmetriesForDensels_PET_CartesianGrid &) const |
| void | get_related_densels (std::vector< Densel > &, const Densel &b) const override |
| fills in a vector with all the Densels that are related to 'b' (including itself) More... | |
| int | num_related_densels (const Densel &b) const override |
| returns the number of Densels related to 'b' More... | |
| unique_ptr< SymmetryOperation > | find_symmetry_operation_from_basic_densel (Densel &) const override |
| given an arbitrary Densel 'b', find the basic Densel More... | |
| bool | find_basic_densel (Densel &b) const override |
| given an arbitrary Densel 'b', find the basic Densel More... | |
| float | get_num_planes_per_scanner_ring () const |
| find out how many image planes there are for every scanner ring | |
| float | get_num_planes_per_axial_pos (const int segment_num) const |
| find correspondence between axial_pos_num and image coordinates More... | |
| float | get_axial_pos_to_z_offset (const int segment_num) const |
 Public Member Functions inherited from stir::DataSymmetriesForDensels | |
| bool | operator== (const DataSymmetriesForDensels &) const |
| bool | operator!= (const DataSymmetriesForDensels &) const |
Additional Inherited Members | |
| Protected Types inherited from stir::DataSymmetriesForDensels | |
| typedef DataSymmetriesForDensels | root_type |
Detailed Description
Symmetries appropriate for a (cylindrical) PET scanner, and a discretised density on a Cartesian grid.
All operations (except the constructor) are inline as timing of the methods of this class is critical.
Constructor & Destructor Documentation
◆ DataSymmetriesForDensels_PET_CartesianGrid()
| stir::DataSymmetriesForDensels_PET_CartesianGrid::DataSymmetriesForDensels_PET_CartesianGrid | ( | const shared_ptr< const ProjDataInfo > & | proj_data_info_ptr, |
| const shared_ptr< const DiscretisedDensity< 3, float >> & | image_info_ptr | ||
| ) |
The DiscretisedDensity pointer has to point to an object of type DiscretisedDensityOnCartesianGrid (or a derived type).
We really need only the geometrical info from the image. At the moment we have to use the data itself as well.
References stir::error(), and stir::round().
Member Function Documentation
◆ get_related_densels()
|
inlineoverridevirtual |
fills in a vector with all the Densels that are related to 'b' (including itself)
- Warning
bhas to be a 'basic' Densel
Implements stir::DataSymmetriesForDensels.
◆ num_related_densels()
|
inlineoverridevirtual |
returns the number of Densels related to 'b'
default implementation in terms of get_related_densels, will be slow of course
Reimplemented from stir::DataSymmetriesForDensels.
◆ find_symmetry_operation_from_basic_densel()
|
inlineoverridevirtual |
given an arbitrary Densel 'b', find the basic Densel
sets 'b' to the corresponding 'basic' Densel and returns the symmetry transformation from 'basic' to 'b'.
Implements stir::DataSymmetriesForDensels.
◆ find_basic_densel()
|
inlineoverridevirtual |
given an arbitrary Densel 'b', find the basic Densel
sets 'b' to the corresponding 'basic' Densel and returns true if 'b' is changed (i.e. it was NOT a basic Densel).
default implementation in terms of find_symmetry_operation_from_basic_densel
Reimplemented from stir::DataSymmetriesForDensels.
◆ get_num_planes_per_axial_pos()
|
inline |
find correspondence between axial_pos_num and image coordinates
z = num_planes_per_axial_pos * axial_pos_num + axial_pos_to_z_offset
compute the offset by matching up the centre of the scanner in the 2 coordinate systems
The documentation for this class was generated from the following files:
- /home/sirfuser/devel/STIRdistrib/STIR/src/include/stir_experimental/recon_buildblock/DataSymmetriesForDensels_PET_CartesianGrid.h
- /home/sirfuser/devel/STIRdistrib/STIR/src/experimental/recon_buildblock/DataSymmetriesForDensels_PET_CartesianGrid.cxx
- /home/sirfuser/devel/STIRdistrib/STIR/src/include/stir_experimental/recon_buildblock/DataSymmetriesForDensels_PET_CartesianGrid.inl
