ImFusion C++ SDK 4.4.0
ImFusion::CT::SpectralXRaySimulation Class Reference

#include <ImFusion/CT/SpectralXRaySimulation.h>

Algorithm for generating synthetic spectral X-ray projections from CT volumes or meshes. More...

Inheritance diagram for ImFusion::CT::SpectralXRaySimulation:

Detailed Description

Algorithm for generating synthetic spectral X-ray projections from CT volumes or meshes.

Public Types

enum class  SimulationMode { Polychromatic = 0 , Monochromatic = 1 }
enum class  PrefilterMaterials {
  None , Aluminum , Beryllium , Carbon ,
  Copper , Gold , Lead , PTFE ,
  Silver , Tin , Titanium , Tungsten ,
  _Count
}
 Available prefilter materials.
enum  DetectorMaterials {
  None , AmorphousSelenium , AmorphousSilicon , BismuthGermaniumOxide ,
  CadmiumTelluride , CadmiumTungstate , CadmiumZincTelluride , CesiumIodide ,
  GadoliniumOxysulfide , Silicon , SodiumIodide , _Count
}
 Available detector materials.
Public Types inherited from ImFusion::Algorithm
enum  Status {
  Unknown = -1 , Success = 0 , Error = 1 , InvalidInput ,
  IncompleteInput , OutOfMemoryHost , OutOfMemoryGPU , UnsupportedGPU ,
  UnknownAction , AbortedByUser , User = 1000
}
 Status codes. More...

Public Member Functions

 SpectralXRaySimulation (const SharedImageSet *sis, const std::vector< Mesh * > meshes)
 Sets up spectral X-ray simulation based on a voxel volume and/or a set of surface meshes.
void compute () override
 Execute the spectral X-ray simulation.
void configure (const Properties *p) override
 Configure this object instance by de-serializing the given Properties.
void configuration (Properties *p) const override
 Serialize the current object configuration into the given Properties object.
OwningDataList takeOutput () override
 Return the generated X-ray projections.
bool setGeometry (std::vector< GeometryUtils::FullGeometryRepresentation > &geo)
 Set projection geometry.
SharedImageSetprojections ()
 Access to the output projections with geometry.
const SharedImageSetvolume ()
 Access to the volume.
Public Member Functions inherited from ImFusion::Algorithm
 Algorithm ()
 Default constructor will registers a single "compute" action that calls compute() and returns status().
virtual void setProgress (Progress *progress)
 Sets a Progress interface the algorithm can use to notify observers about its computing progress.
Progressprogress () const
 Returns the progress interface if set.
virtual int status () const
 Indicates the status of the last call to compute().
virtual bool survivesDataDeletion (const Data *) const
 Indicates whether the algorithm can handle (partial) deletion of the specified data, by default this checks whether the data is in the input list.
const FactoryInfofactoryInfo () const
 Returns the record describing how this Algorithm was instantiated by the AlgorithmFactory.
void setFactoryInfo (const FactoryInfo &value)
 Sets the record describing how this Algorithm was instantiated by the AlgorithmFactory.
Status runAction (const std::string &id)
 Run the action with name id if it exists.
const std::vector< Action > & actions ()
 Get a mapping from Action id to Action as registered in this algorithm.
Public Member Functions inherited from ImFusion::Configurable
virtual void configureDefaults ()
 Retrieve the properties of this object, replaces values with their defaults and sets it again.
void registerParameter (ParameterBase *param)
 Register the given Parameter or SubProperty, so that it will be configured during configure()/configuration().
void unregisterParameter (const ParameterBase *param)
 Remove the given Parameter or SubProperty from the list of registered parameters.
 Configurable (const Configurable &rhs)
 Configurable (Configurable &&rhs) noexcept
Configurable & operator= (const Configurable &)
Configurable & operator= (Configurable &&) noexcept

Static Public Member Functions

static bool createCompatible (const DataList &data, Algorithm **a=nullptr)
 Factory function to check compatibility and optionally create the algorithm.
static const std::tuple< std::string, std::string, float > & prefilterInfo (PrefilterMaterials m)
 Get prefilter information, i.e. tuple of display name, name of data file, and mass density in \(g/mm^3\).
static const std::tuple< std::string, std::string, float > & detectorInfo (DetectorMaterials m)
 Get detector information, i.e. tuple of display name, name of data file, and mass density in \(g/mm^3\).
Static Public Member Functions inherited from ImFusion::Algorithm
static bool createCompatible (const DataList &data, Algorithm **a=nullptr)
 Factory function to check algorithm compatibility with input data and optionally instantiate it.

Public Attributes

Parameter< SimulationMode > p_simulationMode = {"simulationMode", SimulationMode::Monochromatic, this}
 Simulation mode: monochromatic simulation or polychromatic simulation.
Parameter< float > p_detectorSizeX = {"detectorSizeX", 300.f, this}
 Physical size of the detector in x-direction (mm).
Parameter< float > p_detectorSizeY = {"detectorSizeY", 300.f, this}
 Physical size of the detector in y-direction (mm).
Parameter< int > p_width = {"width", 512, this}
 Width (pixel) of the projections to be simulated.
Parameter< int > p_height = {"height", 512, this}
 Height (pixel) of the projections to be simulated.
Parameter< int > p_frames = {"frames", 400, this}
 Number of frames to be simulated.
Parameter< bool > p_visualizeGeometry = {"visualizeGeometry", true, this}
 Whether to visualize geometry of the output projections.
std::vector< Parameter< std::string > > p_meshMaterials
 Materials of the provided meshes.
std::vector< Parameter< float > > p_meshDensities
 Densities of the provided meshes.
Parameter< bool > p_logConversion = {"logConversion", true, this}
 Log normalization of the simulated x-rays.
Parameter< bool > p_addNoise = {"addNoise", false, this}
 Add noise to the simulated data if true.
Parameter< int > p_photonsPerPixel = {"photonsPerPixel", 10000, this}
 Number of photons per pixel (in absence of an object).
SubProperty< std::unique_ptr< ProjectionMatrixIoAlgorithm > > p_matrixIoAlg = {"matrixIOAlg", nullptr, this}
SubProperty< std::unique_ptr< GeometryAlgorithm > > p_geometryAlg = {"geometryAlg", nullptr, this}
Public Attributes inherited from ImFusion::Algorithm
Signal signalOutputChanged
 Signal should be emitted by Algorithms when their output/result has changed.
Signal signalParametersChanged
 Signal should be emitted by Algorithms when their parameter configuration has changed.
Public Attributes inherited from ImFusion::Configurable
Signal signalParametersChanged
 Emitted whenever one of the registered Parameters' or SubPropertys' signalValueChanged signal was emitted.

Spectral X-ray simulation parameters

Parameter< float > p_tubeVoltage = {"tubeVoltage", 120.f, this}
Parameter< float > p_dE = {"energyResolution", 1.f, this}
 Energy resolution (keV), i.e. width of energy bins used in spectral calculations.
Parameter< float > p_anodeAngle = {"anodeAngle", 7.f, this}
 Anode angle (degree) of the x-ray tube. Common values range from 7 to 20 degree.
Parameter< PrefilterMaterialsp_prefilterMaterial0 = {"prefilterMaterial0", PrefilterMaterials::Aluminum, this}
 Material of first prefilter.
Parameter< float > p_prefilterThickness0 = {"prefilterThickness0", 5.f, this}
 Thickness of first prefilter.
Parameter< PrefilterMaterialsp_prefilterMaterial1 = {"prefilterMaterial1", PrefilterMaterials::None, this}
 Material of second prefilter.
Parameter< float > p_prefilterThickness1 = {"prefilterThickness1", 0.f, this}
 Thickness of second prefilter.
Parameter< DetectorMaterialsp_detectorMaterial = {"detectorMaterial", DetectorMaterials::CesiumIodide, this}
 Detector material.
Parameter< float > p_detectorThickness = {"detectorThickness", 1.0f, this}
 Detector thickness.
Parameter< bool > p_energyIntegratingDetector = {"energyIntegratingDetector", true, this}
 If true, detected photons are weighted with their energy to mimic the detection process in an energy integrating detectors.

Monochromatic simulation parameters

Parameter< float > p_xrayEnergy = {"xrayEnergy", 120.f, this}

Additional Inherited Members

Protected Member Functions inherited from ImFusion::Algorithm
void loadDefaults ()
void registerAction (const std::string &id, const std::string &guiName, const std::function< Algorithm::Status(void)> &action)
 Register an action to be run via runAction.
template<typename D>
void registerAction (const std::string &id, const std::string &guiName, Algorithm::Status(D::*action)(void))
 Template version of runAction that can be used with a pointer to a member function.
void registerAction (const Action &action)
 Register an action.
Protected Attributes inherited from ImFusion::Algorithm
std::string m_name
 Algorithm name.
Progressm_progress = nullptr
 Non-owing pointer to a progress interface. May be a nullptr.
FactoryInfo m_factoryInfo = {}
 Record describing how this algorithm was instantiated by the AlgorithmFactory.
int m_status = Status::Unknown
 Algorithm status after last call to compute().
std::vector< Actionm_actions
 Map of key given by the id of the action, of the available actions of this algorithm.
Protected Attributes inherited from ImFusion::Configurable
std::vector< Paramm_params
 List of all registered Parameter and SubProperty instances.

Member Function Documentation

◆ compute()

void ImFusion::CT::SpectralXRaySimulation::compute ( )
overridevirtual

Execute the spectral X-ray simulation.

Implements ImFusion::Algorithm.

◆ configure()

void ImFusion::CT::SpectralXRaySimulation::configure ( const Properties * p)
overridevirtual

Configure this object instance by de-serializing the given Properties.

The default implementation will do so automatically for all registered Parameter and SubProperty instances.

See also
configuration() for the inverse functionality

Reimplemented from ImFusion::Configurable.

◆ configuration()

void ImFusion::CT::SpectralXRaySimulation::configuration ( Properties * p) const
overridevirtual

Serialize the current object configuration into the given Properties object.

The default implementation will do so automatically for all registered Parameter and SubProperty instances.

See also
configure() for the inverse functionality

Reimplemented from ImFusion::Configurable.

◆ takeOutput()

OwningDataList ImFusion::CT::SpectralXRaySimulation::takeOutput ( )
overridevirtual

Return the generated X-ray projections.

Reimplemented from ImFusion::Algorithm.

Member Data Documentation

◆ p_tubeVoltage

Parameter<float> ImFusion::CT::SpectralXRaySimulation::p_tubeVoltage = {"tubeVoltage", 120.f, this}

Tube voltage of the spectrum (kV)

◆ p_energyIntegratingDetector

Parameter<bool> ImFusion::CT::SpectralXRaySimulation::p_energyIntegratingDetector = {"energyIntegratingDetector", true, this}

If true, detected photons are weighted with their energy to mimic the detection process in an energy integrating detectors.

To simulate photon counting detectors, this flag needs to be set to false instead.

◆ p_xrayEnergy

Parameter<float> ImFusion::CT::SpectralXRaySimulation::p_xrayEnergy = {"xrayEnergy", 120.f, this}

X-ray energy (keV). This parameter specifies the photon energy of the simulated X-ray beam when operating in monochromatic mode.


The documentation for this class was generated from the following file:
  • ImFusion/CT/SpectralXRaySimulation.h
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