#include <itkMRASlabIdentifier.h>
Inheritance diagram for itk::MRASlabIdentifier< TInputImage >:
This class is templated over the type of image. In many cases, a 3D MR image is constructed by merging smaller 3D blocks (slabs) which were acquired with different settings such as magnetic settings and patient positions. Therefore, stripe like patterns with slabs can be present in the resulting image. Such artifacts are called "slab boundary" artifacts or "venetian blind" artifacts.
With the slab boundary artifacts in an image, even a same tissue class's intensity values might vary significantly along the borders of slabs. Such rough value changes are not appropriate for some image processing methods. For example, MRIBiasFieldCorrectionFilter assumes a smooth bias field. However, with the slab boundary artifacts, the bias field estimation scheme that MRIBiasFieldCorrectionFilter uses might not adopt well. So, the MRIBiasFieldCorrectionFilter creates regions for slabs using the MRASlabIdentifier and then apply its bias correction scheme to each slab.
For this identifier, a slice means 2D image data which is extracted from the input image along one of three axes (x, y, z). Users can specify the slicing axis using the SetSlicingDirection(int dimension) member. (0 - x, 1 - y, 2 - z).
The identification scheme used here is very simple. 1) Users should specify how many pixels per slice the identifier will sample. 2) For each slice, the identifier searches the specified number of pixels of which intensity values are greater than 0 and less than those of the other pixels in the slice 3) The identifier calculates the average for each slice and the overall average using the search results. 4) For each slice, it subtracts the overall average from the slice average. If the sign of the subtraction result changes, then it assumes that a slab ends and another slab begins.
Definition at line 65 of file itkMRASlabIdentifier.h.
Public Types | |
typedef SmartPointer< const Self > | ConstPointer |
typedef TInputImage::ConstPointer | ImageConstPointer |
typedef TInputImage::IndexType | ImageIndexType |
typedef TInputImage::PixelType | ImagePixelType |
typedef TInputImage::Pointer | ImagePointer |
typedef TInputImage::RegionType | ImageRegionType |
typedef TInputImage::SizeType | ImageSizeType |
typedef TInputImage | ImageType |
typedef SmartPointer< Self > | Pointer |
typedef MRASlabIdentifier | Self |
typedef std::vector< ImageRegionType > | SlabRegionVectorType |
typedef Object | Superclass |
Public Member Functions | |
virtual LightObject::Pointer | CreateAnother () const |
virtual void | DebugOff () const |
virtual void | DebugOn () const |
virtual void | Delete () |
void | GenerateSlabRegions (void) |
Command * | GetCommand (unsigned long tag) |
bool | GetDebug () const |
const MetaDataDictionary & | GetMetaDataDictionary (void) const |
MetaDataDictionary & | GetMetaDataDictionary (void) |
virtual unsigned long | GetMTime () const |
virtual const char * | GetNameOfClass () const |
virtual int | GetReferenceCount () const |
SlabRegionVectorType | GetSlabRegionVector (void) |
bool | HasObserver (const EventObject &event) const |
void | InvokeEvent (const EventObject &) const |
void | InvokeEvent (const EventObject &) |
virtual void | Modified () const |
void | Print (std::ostream &os, Indent indent=0) const |
virtual void | Register () const |
void | RemoveAllObservers () |
void | RemoveObserver (unsigned long tag) |
void | SetDebug (bool debugFlag) const |
void | SetMetaDataDictionary (const MetaDataDictionary &rhs) |
virtual void | SetReferenceCount (int) |
virtual void | UnRegister () const |
unsigned long | AddObserver (const EventObject &event, Command *) const |
unsigned long | AddObserver (const EventObject &event, Command *) |
virtual const ImagePixelType & | GetBackgroundMinimumThreshold () |
virtual void | SetBackgroundMinimumThreshold (ImagePixelType _arg) |
virtual const ImageType * | GetImage () |
virtual void | SetImage (const ImageType *_arg) |
virtual const unsigned int & | GetNumberOfSamples () |
virtual void | SetNumberOfSamples (unsigned int _arg) |
virtual const int & | GetSlicingDirection () |
virtual void | SetSlicingDirection (int _arg) |
virtual const double & | GetTolerance () |
virtual void | SetTolerance (double _arg) |
Static Public Member Functions | |
static void | BreakOnError () |
static Pointer | New () |
static bool | GetGlobalWarningDisplay () |
static void | GlobalWarningDisplayOff () |
static void | GlobalWarningDisplayOn () |
static void | SetGlobalWarningDisplay (bool flag) |
Protected Member Functions | |
MRASlabIdentifier () | |
bool | PrintObservers (std::ostream &os, Indent indent) const |
void | PrintSelf (std::ostream &os, Indent indent) const |
virtual | ~MRASlabIdentifier () |
virtual void | PrintHeader (std::ostream &os, Indent indent) const |
virtual void | PrintTrailer (std::ostream &os, Indent indent) const |
Protected Attributes | |
volatile int | m_ReferenceCount |
SimpleFastMutexLock | m_ReferenceCountLock |
typedef SmartPointer<const Self> itk::MRASlabIdentifier< TInputImage >::ConstPointer |
typedef TInputImage::ConstPointer itk::MRASlabIdentifier< TInputImage >::ImageConstPointer |
Const Pointer type for the image.
Definition at line 87 of file itkMRASlabIdentifier.h.
typedef TInputImage::IndexType itk::MRASlabIdentifier< TInputImage >::ImageIndexType |
Definition at line 91 of file itkMRASlabIdentifier.h.
typedef TInputImage::PixelType itk::MRASlabIdentifier< TInputImage >::ImagePixelType |
Type definition for the input image pixel type.
Definition at line 90 of file itkMRASlabIdentifier.h.
typedef TInputImage::Pointer itk::MRASlabIdentifier< TInputImage >::ImagePointer |
Pointer type for the image.
Definition at line 84 of file itkMRASlabIdentifier.h.
typedef TInputImage::RegionType itk::MRASlabIdentifier< TInputImage >::ImageRegionType |
Definition at line 93 of file itkMRASlabIdentifier.h.
typedef TInputImage::SizeType itk::MRASlabIdentifier< TInputImage >::ImageSizeType |
Definition at line 92 of file itkMRASlabIdentifier.h.
typedef TInputImage itk::MRASlabIdentifier< TInputImage >::ImageType |
Type definition for the input image.
Definition at line 78 of file itkMRASlabIdentifier.h.
typedef SmartPointer<Self> itk::MRASlabIdentifier< TInputImage >::Pointer |
typedef MRASlabIdentifier itk::MRASlabIdentifier< TInputImage >::Self |
Standard class typedefs.
Reimplemented from itk::Object.
Definition at line 69 of file itkMRASlabIdentifier.h.
typedef std::vector<ImageRegionType> itk::MRASlabIdentifier< TInputImage >::SlabRegionVectorType |
Definition at line 94 of file itkMRASlabIdentifier.h.
typedef Object itk::MRASlabIdentifier< TInputImage >::Superclass |
itk::MRASlabIdentifier< TInputImage >::MRASlabIdentifier | ( | ) | [protected] |
virtual itk::MRASlabIdentifier< TInputImage >::~MRASlabIdentifier | ( | ) | [inline, protected, virtual] |
Definition at line 131 of file itkMRASlabIdentifier.h.
unsigned long itk::Object::AddObserver | ( | const EventObject & | event, | |
Command * | ||||
) | const [inherited] |
unsigned long itk::Object::AddObserver | ( | const EventObject & | event, | |
Command * | ||||
) | [inherited] |
Allow people to add/remove/invoke observers (callbacks) to any ITK object. This is an implementation of the subject/observer design pattern. An observer is added by specifying an event to respond to and an itk::Command to execute. It returns an unsigned long tag which can be used later to remove the event or retrieve the command. The memory for the Command becomes the responsibility of this object, so don't pass the same instance of a command to two different objects
static void itk::LightObject::BreakOnError | ( | ) | [static, inherited] |
This method is called when itkExceptionMacro executes. It allows the debugger to break on error.
virtual LightObject::Pointer itk::Object::CreateAnother | ( | ) | const [virtual, inherited] |
Create an object from an instance, potentially deferring to a factory. This method allows you to create an instance of an object that is exactly the same type as the referring object. This is useful in cases where an object has been cast back to a base class.
Reimplemented from itk::LightObject.
virtual void itk::Object::DebugOff | ( | ) | const [virtual, inherited] |
Turn debugging output off.
virtual void itk::Object::DebugOn | ( | ) | const [virtual, inherited] |
Turn debugging output on.
virtual void itk::LightObject::Delete | ( | ) | [virtual, inherited] |
Delete an itk object. This method should always be used to delete an object when the new operator was used to create it. Using the C delete method will not work with reference counting.
void itk::MRASlabIdentifier< TInputImage >::GenerateSlabRegions | ( | void | ) |
Compute the average values of miminum intensity pixels for each slice and compare the average values with overall averages.
virtual const ImagePixelType& itk::MRASlabIdentifier< TInputImage >::GetBackgroundMinimumThreshold | ( | ) | [virtual] |
Command* itk::Object::GetCommand | ( | unsigned long | tag | ) | [inherited] |
Get the command associated with the given tag. NOTE: This returns a pointer to a Command, but it is safe to asign this to a Command::Pointer. Since Command inherits from LightObject, at this point in the code, only a pointer or a reference to the Command can be used.
bool itk::Object::GetDebug | ( | ) | const [inherited] |
Get the value of the debug flag.
static bool itk::Object::GetGlobalWarningDisplay | ( | ) | [static, inherited] |
virtual const ImageType* itk::MRASlabIdentifier< TInputImage >::GetImage | ( | ) | [virtual] |
const MetaDataDictionary& itk::Object::GetMetaDataDictionary | ( | void | ) | const [inherited] |
MetaDataDictionary& itk::Object::GetMetaDataDictionary | ( | void | ) | [inherited] |
virtual unsigned long itk::Object::GetMTime | ( | ) | const [virtual, inherited] |
Return this objects modified time.
Reimplemented in itk::ImageRegistrationMethod< TFixedImage, TMovingImage >, itk::ImageToSpatialObjectRegistrationMethod< TFixedImage, TMovingSpatialObject >, itk::MultiResolutionImageRegistrationMethod< TFixedImage, TMovingImage >, itk::PointSetToImageRegistrationMethod< TFixedPointSet, TMovingImage >, itk::PointSetToPointSetRegistrationMethod< TFixedPointSet, TMovingPointSet >, itk::DeformationFieldSource< TOutputImage >, itk::InverseDeformationFieldImageFilter< TInputImage, TOutputImage >, itk::ResampleImageFilter< TInputImage, TOutputImage, TInterpolatorPrecisionType >, itk::VectorResampleImageFilter< TInputImage, TOutputImage, TInterpolatorPrecisionType >, itk::BoundingBox< TPointIdentifier, VPointDimension, TCoordRep, TPointsContainer >, itk::ImageAdaptor< TImage, TAccessor >, itk::ResampleImageFilter< TInputImage, TOutputImage, TInterpolatorPrecisionType >, itk::ImageSpatialObject< TDimension, TPixelType >, itk::MeshSpatialObject< TMesh >, itk::SceneSpatialObject< TSpaceDimension >, itk::SpatialObject< TDimension >, itk::ImageAdaptor< TImage, itk::Accessor::AsinPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::AbsPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::LogPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::ComplexToPhasePixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::Log10PixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::ExpPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::AddPixelAccessor< TImage::PixelType > >, itk::ImageAdaptor< itk::VectorImage< TPixelType, Dimension >, itk::Accessor::VectorImageToImagePixelAccessor< TPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::RGBToVectorPixelAccessor< TImage::PixelType::ComponentType > >, itk::ImageAdaptor< TImage, itk::PixelAccessor< TInternalType, TExternalType > >, itk::ImageAdaptor< TImage, itk::Accessor::SqrtPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::AcosPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::ComplexToModulusPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::ExpNegativePixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::VectorToRGBPixelAccessor< TImage::PixelType::ValueType > >, itk::ImageAdaptor< TImage, itk::Accessor::TanPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::ComplexToRealPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::RGBToLuminancePixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::AtanPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::SinPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::ComplexToImaginaryPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::CosPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageSpatialObject< TDimension, unsigned char >, itk::SpatialObject< 3 >, and itk::SpatialObject< ::itk::GetMeshDimension< TMesh >::PointDimension >.
Referenced by itk::SpatialObject< ::itk::GetMeshDimension< TMesh >::PointDimension >::GetObjectMTime().
virtual const char* itk::MRASlabIdentifier< TInputImage >::GetNameOfClass | ( | ) | const [virtual] |
Run-time type information (and related methods).
Reimplemented from itk::Object.
virtual const unsigned int& itk::MRASlabIdentifier< TInputImage >::GetNumberOfSamples | ( | ) | [virtual] |
virtual int itk::LightObject::GetReferenceCount | ( | ) | const [inline, virtual, inherited] |
Gets the reference count on this object.
Definition at line 98 of file itkLightObject.h.
SlabRegionVectorType itk::MRASlabIdentifier< TInputImage >::GetSlabRegionVector | ( | void | ) |
Get slab regions.
virtual const int& itk::MRASlabIdentifier< TInputImage >::GetSlicingDirection | ( | ) | [virtual] |
virtual const double& itk::MRASlabIdentifier< TInputImage >::GetTolerance | ( | ) | [virtual] |
static void itk::Object::GlobalWarningDisplayOff | ( | ) | [inline, static, inherited] |
static void itk::Object::GlobalWarningDisplayOn | ( | ) | [inline, static, inherited] |
bool itk::Object::HasObserver | ( | const EventObject & | event | ) | const [inherited] |
Return true if an observer is registered for this event.
void itk::Object::InvokeEvent | ( | const EventObject & | ) | const [inherited] |
Call Execute on all the Commands observing this event id. The actions triggered by this call doesn't modify this object.
void itk::Object::InvokeEvent | ( | const EventObject & | ) | [inherited] |
Call Execute on all the Commands observing this event id.
virtual void itk::Object::Modified | ( | ) | const [virtual, inherited] |
Update the modification time for this object. Many filters rely on the modification time to determine if they need to recompute their data.
Reimplemented in itk::NormalizeImageFilter< TInputImage, TOutputImage >, itk::ImageAdaptor< TImage, TAccessor >, itk::ImageAdaptor< TImage, itk::Accessor::AsinPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::AbsPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::LogPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::ComplexToPhasePixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::Log10PixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::ExpPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::AddPixelAccessor< TImage::PixelType > >, itk::ImageAdaptor< itk::VectorImage< TPixelType, Dimension >, itk::Accessor::VectorImageToImagePixelAccessor< TPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::RGBToVectorPixelAccessor< TImage::PixelType::ComponentType > >, itk::ImageAdaptor< TImage, itk::PixelAccessor< TInternalType, TExternalType > >, itk::ImageAdaptor< TImage, itk::Accessor::SqrtPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::AcosPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::ComplexToModulusPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::ExpNegativePixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::VectorToRGBPixelAccessor< TImage::PixelType::ValueType > >, itk::ImageAdaptor< TImage, itk::Accessor::TanPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::ComplexToRealPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::RGBToLuminancePixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::AtanPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::SinPixelAccessor< TImage::PixelType, TOutputPixelType > >, itk::ImageAdaptor< TImage, itk::Accessor::ComplexToImaginaryPixelAccessor< TImage::PixelType, TOutputPixelType > >, and itk::ImageAdaptor< TImage, itk::Accessor::CosPixelAccessor< TImage::PixelType, TOutputPixelType > >.
Referenced by itk::NarrowBandImageFilterBase< TInputImage, itk::Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >::InsertNarrowBandNode(), itk::MatrixOffsetTransformBase< TScalarType, 3, 3 >::SetCenter(), itk::HistogramAlgorithmBase< TInputHistogram >::SetInputHistogram(), itk::MatrixOffsetTransformBase< TScalarType, 3, 3 >::SetMatrix(), itk::NarrowBandImageFilterBase< TInputImage, itk::Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >::SetNarrowBand(), itk::NarrowBandImageFilterBase< TInputImage, itk::Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >::SetNarrowBandInnerRadius(), itk::NarrowBandImageFilterBase< TInputImage, itk::Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >::SetNarrowBandTotalRadius(), itk::MatrixOffsetTransformBase< TScalarType, 3, 3 >::SetOffset(), itk::ThresholdLabelerImageFilter< TInputImage, TOutputImage >::SetRealThresholds(), itk::CollidingFrontsImageFilter< TInputImage, TOutputImage >::SetSeedPoints1(), itk::CollidingFrontsImageFilter< TInputImage, TOutputImage >::SetSeedPoints2(), itk::NonUniformBSpline< TDimension >::SetSplineOrder(), itk::ThresholdLabelerImageFilter< TInputImage, TOutputImage >::SetThresholds(), itk::Statistics::GoodnessOfFitFunctionBase< TInputHistogram >::SetTotalObservedScale(), and itk::MatrixOffsetTransformBase< TScalarType, 3, 3 >::SetTranslation().
static Pointer itk::MRASlabIdentifier< TInputImage >::New | ( | ) | [static] |
Method for creation through the object factory.
Reimplemented from itk::Object.
void itk::LightObject::Print | ( | std::ostream & | os, | |
Indent | indent = 0 | |||
) | const [inherited] |
Cause the object to print itself out.
Referenced by itk::WeakPointer< itk::ProcessObject >::Print().
virtual void itk::LightObject::PrintHeader | ( | std::ostream & | os, | |
Indent | indent | |||
) | const [protected, virtual, inherited] |
bool itk::Object::PrintObservers | ( | std::ostream & | os, | |
Indent | indent | |||
) | const [protected, inherited] |
void itk::MRASlabIdentifier< TInputImage >::PrintSelf | ( | std::ostream & | os, | |
Indent | indent | |||
) | const [protected, virtual] |
Methods invoked by Print() to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.
Reimplemented from itk::Object.
virtual void itk::LightObject::PrintTrailer | ( | std::ostream & | os, | |
Indent | indent | |||
) | const [protected, virtual, inherited] |
virtual void itk::Object::Register | ( | ) | const [virtual, inherited] |
Increase the reference count (mark as used by another object).
Reimplemented from itk::LightObject.
void itk::Object::RemoveAllObservers | ( | ) | [inherited] |
Remove all observers .
void itk::Object::RemoveObserver | ( | unsigned long | tag | ) | [inherited] |
Remove the observer with this tag value.
virtual void itk::MRASlabIdentifier< TInputImage >::SetBackgroundMinimumThreshold | ( | ImagePixelType | _arg | ) | [virtual] |
Set/Get the minimum threshold value for the background pixels
void itk::Object::SetDebug | ( | bool | debugFlag | ) | const [inherited] |
Set the value of the debug flag. A non-zero value turns debugging on.
static void itk::Object::SetGlobalWarningDisplay | ( | bool | flag | ) | [static, inherited] |
This is a global flag that controls whether any debug, warning or error messages are displayed.
Referenced by itk::Object::GlobalWarningDisplayOff(), and itk::Object::GlobalWarningDisplayOn().
virtual void itk::MRASlabIdentifier< TInputImage >::SetImage | ( | const ImageType * | _arg | ) | [virtual] |
Set/Get the input image.
void itk::Object::SetMetaDataDictionary | ( | const MetaDataDictionary & | rhs | ) | [inherited] |
virtual void itk::MRASlabIdentifier< TInputImage >::SetNumberOfSamples | ( | unsigned int | _arg | ) | [virtual] |
Set/Get the number of minimum intensity pixels per slice.
virtual void itk::Object::SetReferenceCount | ( | int | ) | [virtual, inherited] |
Sets the reference count (use with care)
Reimplemented from itk::LightObject.
virtual void itk::MRASlabIdentifier< TInputImage >::SetSlicingDirection | ( | int | _arg | ) | [virtual] |
Set/Get the direction of slicing/ 0 - x axis, 1 - y axis, 2 - z axis
virtual void itk::MRASlabIdentifier< TInputImage >::SetTolerance | ( | double | _arg | ) | [virtual] |
Set/Get the tolerance value.
virtual void itk::Object::UnRegister | ( | ) | const [virtual, inherited] |
Decrease the reference count (release by another object).
Reimplemented from itk::LightObject.
volatile int itk::LightObject::m_ReferenceCount [mutable, protected, inherited] |
Number of uses of this object by other objects.
Definition at line 119 of file itkLightObject.h.
SimpleFastMutexLock itk::LightObject::m_ReferenceCountLock [mutable, protected, inherited] |
Mutex lock to protect modification to the reference count
Definition at line 122 of file itkLightObject.h.