Computes the directed Mean distance between the boundaries of non-zero pixel regions of two images. More...

#include <itkContourDirectedMeanDistanceImageFilter.h>

Inheritance diagram for itk::ContourDirectedMeanDistanceImageFilter< TInputImage1, TInputImage2 >:

Collaboration diagram for itk::ContourDirectedMeanDistanceImageFilter< TInputImage1, TInputImage2 >:

Public Types
typedef SmartPointer< const Self >	ConstPointer
typedef TInputImage1::IndexType	IndexType
typedef TInputImage1::ConstPointer	InputImage1ConstPointer
typedef TInputImage1::PixelType	InputImage1PixelType
typedef TInputImage1::Pointer	InputImage1Pointer
typedef TInputImage1	InputImage1Type
typedef TInputImage2::ConstPointer	InputImage2ConstPointer
typedef TInputImage2::PixelType	InputImage2PixelType
typedef TInputImage2::Pointer	InputImage2Pointer
typedef TInputImage2	InputImage2Type
typedef SmartPointer< Self >	Pointer
typedef NumericTraits < InputImage1PixelType > ::RealType	RealType
typedef TInputImage1::RegionType	RegionType
typedef ContourDirectedMeanDistanceImageFilter	Self
typedef TInputImage1::SizeType	SizeType
typedef ImageToImageFilter < TInputImage1, TInputImage1 >	Superclass
Public Member Functions
virtual ::itk::LightObject::Pointer	CreateAnother (void) const
virtual RealType	GetContourDirectedMeanDistance () const
const InputImage1Type *	GetInput1 (void)
const InputImage2Type *	GetInput2 (void)
virtual const char *	GetNameOfClass () const
void	SetInput1 (const InputImage1Type *image)
void	SetInput2 (const InputImage2Type *image)
virtual void	SetUseImageSpacing (bool _arg)
	typedef (Concept::HasNumericTraits< InputImage1PixelType >) InputHasNumericTraitsCheck
Static Public Member Functions
static Pointer	New ()
Static Public Attributes
static const unsigned int	ImageDimension = TInputImage1::ImageDimension
Protected Member Functions
void	AfterThreadedGenerateData ()
void	AllocateOutputs ()
void	BeforeThreadedGenerateData ()
void	EnlargeOutputRequestedRegion (DataObject *data)
void	GenerateInputRequestedRegion ()
void	ThreadedGenerateData (const RegionType &outputRegionForThread, ThreadIdType threadId)

	ContourDirectedMeanDistanceImageFilter ()
	~ContourDirectedMeanDistanceImageFilter ()
void	PrintSelf (std::ostream &os, Indent indent) const
Private Types
typedef Image< RealType, itkGetStaticConstMacro(ImageDimension) >	DistanceMapType
Private Member Functions
	ContourDirectedMeanDistanceImageFilter (const Self &)
void	operator= (const Self &)
Private Attributes
RealType	m_ContourDirectedMeanDistance
Array< IdentifierType >	m_Count
DistanceMapType::Pointer	m_DistanceMap
Array< RealType >	m_MeanDistance
bool	m_UseImageSpacing

Detailed Description

template<class TInputImage1, class TInputImage2>
class itk::ContourDirectedMeanDistanceImageFilter< TInputImage1, TInputImage2 >

Computes the directed Mean distance between the boundaries of non-zero pixel regions of two images.

ContourDirectedMeanDistanceImageFilter computes the distance between the set non-zero pixels of two images using the following formula:

$h(A,B) = \mathrm{mean}_{a \in A} \min_{b \in B} \| a - b\|$

where $A$ and $B$ are respectively the set of non-zero pixels in the first and second input images. It identifies the point $a \in A$ that is farthest from any point of $B$ and measures the distance from $a$ to the nearest neighbor in $B$ . Note that this function is not is not symmetric and hence is not a true distance.

In particular, this filter uses the SignedDanielssonDistanceMapImageFilter inside to compute distance map from all non-zero pixels in the second image. It then computes the mean distance (in pixels) within the boundary pixels of non-zero regions in the first image.

Use MeanDistanceImageFilter to compute the full Mean distance.

This filter requires the largest possible region of the first image and the same corresponding region in the second image. It behaves as filter with two input and one output. Thus it can be inserted in a pipeline with other filters. The filter passes the first input through unmodified.

This filter is templated over the two input image type. It assume both image have the same number of dimensions.

See also:: SignedDanielssonDistanceMapImageFilter; MeanDistanceImageFilter

Author:: Teo Popa, ISIS Center, Georgetown University

Definition at line 66 of file itkContourDirectedMeanDistanceImageFilter.h.