#include <ImFusion/CT/GlFourierFilter1D.h>

OpenGL-based 1D ramp filter for FDK reconstruction. More...

Inheritance diagram for ImFusion::CT::GlFourierFilter1D:

Detailed Description

OpenGL-based 1D ramp filter for FDK reconstruction.

Performs Fourier-domain convolution for filtering X-ray projections before backprojection.

Public Types
enum	KernelMode { RAM_LAK , SHEPP_LOGAN , HAMMING , PARZEN , NR_KERNEL_MODES }
	Selection of discrete convolution kernels. More...
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
	GlFourierFilter1D (SharedImageSet &imagesIn, GL::Framebuffer *fbo=0)
GlImage *	buildKernel (double spacing=1.0, bool normalize=true)
	Sets up m_kernel and returns m_kernel.
bool	setKernelSize (int size, double k) override
	Deprecated method, use configure() instead.
Public Member Functions inherited from ImFusion::GlFilter
	GlFilter (GL::Framebuffer *fbo=0)
	Constructor with optional FBO to use. If no FBO is specified a private FBO is created.
	~GlFilter () override
	Destructor.
virtual bool	setKernelSize (double, vec3, double)
	Common interface to set filter kernel size in mm and parameter.
virtual void	compute (SharedImage &imgIn, SharedImage &imgOut)
virtual void	compute (const std::vector< GlImage * > &imgIn, std::vector< GlImage * > &imgOut)
	Convenience function for executing filter on multiple images.
virtual void	prepareForMasking (Mask *)
	Prepare the filter's GlProgram(s) for masking.
virtual bool	supportsMetricMode () const
	Return true if the filter supports anisotropic spacing, i.e. metric.
void	setMetricMode (bool value)
	If the GlFilter supports metric, i.e.
bool	metricMode () const
	Getter for m_metricMode.
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.
Progress *	progress () 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 FactoryInfo &	factoryInfo () 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

Protected Member Functions
bool	init ()
	Called before computation. Sets up spatial ramp kernel.
bool	parkerRequired () const
	Helper method. Uses angle range and cone beam angle to derive if Parker weighting is required.
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.

Algorithm interface methods
void	compute () override
	Algorithm interface.
OwningDataList	takeOutput () override
	Return any new Data that was created by the Algorithm during the last call to compute().
static bool	createCompatible (const DataList &data, Algorithm **a=0)

Configurable interface methods
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.

GlFilter interface methods
void	compute (const GlImage &imgIn, GlImage &imgOut) override
	Execute the filter on the image.
bool	good () const override
	Return true if the filter can be used, in particular if the shaders are available.

Additional Inherited Members
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 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.
Protected Attributes inherited from ImFusion::GlFilter
GL::Framebuffer *	m_fbo
bool	m_ownFbo
bool	m_metricMode
	If set to true the GlFilter result will be computed taking the spacing into account.
Protected Attributes inherited from ImFusion::Algorithm
std::string	m_name
	Algorithm name.
Progress *	m_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< Action >	m_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< Param >	m_params
	List of all registered Parameter and SubProperty instances.

Member Enumeration Documentation

◆ KernelMode

enum ImFusion::CT::GlFourierFilter1D::KernelMode

Selection of discrete convolution kernels.

Sorted from sharpest to smoothest. The corresponding spectral ramp filters are described in RampFilter.h

Enumerator
HAMMING	Set tuning parameter alpha to about 0.54.

Member Function Documentation

◆ compute() [1/2]

void ImFusion::CT::GlFourierFilter1D::compute ( )

overridevirtual

Algorithm interface.

Reimplemented from ImFusion::GlFilter.

◆ takeOutput()

OwningDataList ImFusion::CT::GlFourierFilter1D::takeOutput ( )

overridevirtual

Return any new Data that was created by the Algorithm during the last call to compute().

The default implementation will return an empty list.

Note: Since ownership of the data is transferred, you can call this method only once between calls to compute().

Reimplemented from ImFusion::Algorithm.

◆ configure()

void ImFusion::CT::GlFourierFilter1D::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::GlFourierFilter1D::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.

◆ compute() [2/2]

void ImFusion::CT::GlFourierFilter1D::compute	(	const GlImage &	imgIn,
		GlImage &	imgOut )

overridevirtual

Execute the filter on the image.

Implements ImFusion::GlFilter.

◆ good()

bool ImFusion::CT::GlFourierFilter1D::good ( ) const

overridevirtual

Return true if the filter can be used, in particular if the shaders are available.

Implements ImFusion::GlFilter.

◆ buildKernel()

GlImage * ImFusion::CT::GlFourierFilter1D::buildKernel	(	double	spacing = 1.0,
		bool	normalize = true )

Sets up m_kernel and returns m_kernel.

Parameters

normalize determines whether the result is rescaled to have sum 1 (or 0, if this is not possible)

◆ setKernelSize()

bool ImFusion::CT::GlFourierFilter1D::setKernelSize	(	int	size,
		double	k )

overridevirtual

Deprecated method, use configure() instead.

Reimplemented from ImFusion::GlFilter.

The documentation for this class was generated from the following file:

ImFusion/CT/GlFourierFilter1D.h

Detailed Description

Public Types

Public Member Functions

Protected Member Functions

Algorithm interface methods

Configurable interface methods

GlFilter interface methods

Additional Inherited Members

Member Enumeration Documentation

◆ KernelMode

Member Function Documentation

◆ compute() [1/2]

◆ takeOutput()

◆ configure()

◆ configuration()

◆ compute() [2/2]

◆ good()

◆ buildKernel()

◆ setKernelSize()