This class computes run length descriptions from an image. More...

#include <itkEnhancedScalarImageToRunLengthFeaturesFilter.h>

Inheritance diagram for itk::Statistics::EnhancedScalarImageToRunLengthFeaturesFilter< TImageType, THistogramFrequencyContainer >:

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Collaboration diagram for itk::Statistics::EnhancedScalarImageToRunLengthFeaturesFilter< TImageType, THistogramFrequencyContainer >:

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Public Types
typedef EnhancedScalarImageToRunLengthFeaturesFilter	Self

typedef ProcessObject	Superclass

typedef SmartPointer< Self >	Pointer

typedef SmartPointer< const Self >	ConstPointer

typedef THistogramFrequencyContainer	FrequencyContainerType

typedef TImageType	ImageType

typedef ImageType::Pointer	ImagePointer

typedef ImageType::PixelType	PixelType

typedef ImageType::OffsetType	OffsetType

typedef VectorContainer< unsigned char, OffsetType >	OffsetVector

typedef OffsetVector::Pointer	OffsetVectorPointer

typedef OffsetVector::ConstPointer	OffsetVectorConstPointer

typedef EnhancedScalarImageToRunLengthMatrixFilter< ImageType, FrequencyContainerType >	RunLengthMatrixFilterType

typedef RunLengthMatrixFilterType::HistogramType	HistogramType

typedef EnhancedHistogramToRunLengthFeaturesFilter< HistogramType >	RunLengthFeaturesFilterType

typedef short	RunLengthFeatureName

typedef VectorContainer< unsigned char, RunLengthFeatureName >	FeatureNameVector

typedef FeatureNameVector::Pointer	FeatureNameVectorPointer

typedef FeatureNameVector::ConstPointer	FeatureNameVectorConstPointer

typedef VectorContainer< unsigned char, double >	FeatureValueVector

typedef FeatureValueVector::Pointer	FeatureValueVectorPointer

typedef DataObject::Pointer	DataObjectPointer

typedef DataObjectDecorator< FeatureValueVector >	FeatureValueVectorDataObjectType

Public Member Functions
virtual const char *	GetClassName () const

const FeatureValueVectorDataObjectType *	GetFeatureMeansOutput () const

const FeatureValueVectorDataObjectType *	GetFeatureStandardDeviationsOutput () const

void	SetInput (const ImageType *)

const ImageType *	GetInput () const

virtual const FeatureValueVector::Pointer &	GetFeatureMeans () const

virtual const FeatureValueVector::Pointer &	GetFeatureStandardDeviations () const

virtual void	SetRequestedFeatures (const FeatureNameVector *_arg)

virtual const FeatureNameVector *	GetRequestedFeatures ()

virtual void	SetOffsets (const OffsetVector *_arg)

virtual const OffsetVector *	GetOffsets ()

void	SetNumberOfBinsPerAxis (unsigned int)

void	SetPixelValueMinMax (PixelType min, PixelType max)

void	SetDistanceValueMinMax (double min, double max)

void	SetMaskImage (const ImageType *)

const ImageType *	GetMaskImage () const

void	SetInsidePixelValue (PixelType InsidePixelValue)

virtual bool	GetFastCalculations () const

virtual void	SetFastCalculations (bool _arg)

virtual void	FastCalculationsOn ()

virtual void	FastCalculationsOff ()

Static Public Member Functions
static Pointer	New ()

Protected Types
typedef ProcessObject::DataObjectPointerArraySizeType	DataObjectPointerArraySizeType

Protected Member Functions
	EnhancedScalarImageToRunLengthFeaturesFilter ()

virtual	~EnhancedScalarImageToRunLengthFeaturesFilter ()

virtual void	PrintSelf (std::ostream &os, Indent indent) const ITK_OVERRIDE

void	FastCompute ()

void	FullCompute ()

virtual void	GenerateData () ITK_OVERRIDE

virtual DataObjectPointer	MakeOutput (DataObjectPointerArraySizeType) ITK_OVERRIDE

Detailed Description

template<typename TImageType, typename THistogramFrequencyContainer = DenseFrequencyContainer2>
class itk::Statistics::EnhancedScalarImageToRunLengthFeaturesFilter< TImageType, THistogramFrequencyContainer >

This class computes run length descriptions from an image.

By default, run length features are computed for each spatial direction and then averaged afterward, so it is possible to access the standard deviations of the texture features. These values give a clue as to texture anisotropy. However, doing this is much more work, because it involved computing one for each offset given. To compute a single matrix using the first offset, call FastCalculationsOn(). If this is called, then the texture standard deviations will not be computed (and will be set to zero), but texture computation will be much faster.

This class is templated over the input image type.

Template Parameters: The image type, and the type of histogram frequency container. If you are using a large number of bins per axis, a sparse frequency container may be advisable. The default is to use a dense frequency container.

Inputs and parameters:

An image
A mask defining the region over which texture features will be calculated. (Optional)
The pixel value that defines the "inside" of the mask. (Optional, defaults to 1 if a mask is set.)
The set of features to be calculated. These features are defined in the HistogramToRunLengthFeaturesFilter class.
The number of intensity bins. (Optional, defaults to 256.)
The set of directions (offsets) to average across. (Optional, defaults to {(-1, 0), (-1, -1), (0, -1), (1, -1)} for 2D images and scales analogously for ND images.)
The pixel intensity range over which the features will be calculated. (Optional, defaults to the full dynamic range of the pixel type.)
The distance range over which the features will be calculated. (Optional, defaults to the full dynamic range of double type.)

In general, the default parameter values should be sufficient.

Outputs: (1) The average value of each feature. (2) The standard deviation in the values of each feature.

Print references: M. M. Galloway. Texture analysis using gray level run lengths. Computer Graphics and Image Processing, 4:172-179, 1975.

A. Chu, C. M. Sehgal, and J. F. Greenleaf. Use of gray value distribution of run lengths for texture analysis. Pattern Recognition Letters, 11:415-420, 1990.

B. R. Dasarathy and E. B. Holder. Image characterizations based on joint gray-level run-length distributions. Pattern Recognition Letters, 12:490-502, 1991.

IJ article: http://hdl.handle.net/1926/1374

See also: EnhancedScalarImageToRunLengthFeaturesFilter; ScalarImageToRunLengthMatrixFilter; HistogramToRunLengthFeaturesFilter

Author: : Nick Tustison

Definition at line 112 of file itkEnhancedScalarImageToRunLengthFeaturesFilter.h.