cmtk::ScalarImageSimilarity Class Reference [cmtkRegistration Library]

Class with operators to compute various 2-D image similarity measures. More...

#include <cmtkScalarImageSimilarity.h>

Inheritance diagram for cmtk::ScalarImageSimilarity:

Collaboration diagram for cmtk::ScalarImageSimilarity:

List of all members.

Public Types
enum	ID {   MI = 0, NMI = 1, RMI = 2, RNMI = 3,   CR = 4, CC = 5, MSD = 6, PSNR = 7,   DAE = 8, GradientCorrelation = 9, PatternIntensity = 10 }
	Identifiers for all available metrics. More...
Static Public Member Functions
static ReturnType	GetMutualInformation (const ScalarImage *image0, const ScalarImage *image1, ScalarImageSimilarityMemory *const memory=NULL)
	Compute mutual information between two images.
static ReturnType	GetNormalizedMutualInformation (const ScalarImage *image0, const ScalarImage *image1, ScalarImageSimilarityMemory *const memory=NULL)
	Compute normalized mutual information between two images.
static ReturnType	GetMutualInformation (std::vector< const ScalarImage * > &array0, std::vector< const ScalarImage * > &array1, const bool normalized=false)
	Compute mutual information between two sets of pixel arrays.
static ReturnType	GetNormalizedMutualInformation (std::vector< const ScalarImage * > &array0, std::vector< const ScalarImage * > &array1)
	Compute norrmalized mutual information between two sets of pixel arrays.
static ReturnType	GetRegionalMutualInformation (const ScalarImage *image0, const ScalarImage *image1, const int radius=2)
	Compute regional mutual information between two images.
static ReturnType	GetMinusMeanSquaredDifference (const ScalarImage *image0, const ScalarImage *image1)
	Compute negated (i.e., sign-switched) mean squared pixel difference between two images.
static ReturnType	GetCrossCorrelation (const ScalarImage *image0, const ScalarImage *image1)
	Compute normalized cross correlation between two images.
static ReturnType	GetGradientCorrelation (const ScalarImage *image0, const ScalarImage *image1)
	Compute gradient correlation between two images.
static ReturnType	GetGradientDifference (const ScalarImage *image0, const ScalarImage *image1, const ReturnType Ax=1, const ReturnType Ay=1)
	Compute gradient difference between two images.
static ReturnType	GetPatternIntensity (const ScalarImage *image0, const ScalarImage *image1, const ReturnType sigma=10, const int radius=3)
	Compute pattern intensity between two images.
static ReturnType	GetDifferenceImageEntropy (const ScalarImage *image0, const ScalarImage *image1)
	Compute entropy of difference of two images.
static ReturnType	GetDifferenceImageEntropy (const ScalarImage *image0, const ScalarImage *image1, Types::DataItem &scaleFactor)
	Compute entropy of difference of two images.
static ReturnType	GetCorrelationRatio (const ScalarImage *image0, const ScalarImage *image1)
	Compute correlation ratio between two pixel arrays.
static bool	CheckImageDimensions (const ScalarImage *image0, const ScalarImage *image1)
	Check whether two images are valid and have matching pixel dimensions.

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Detailed Description

Class with operators to compute various 2-D image similarity measures.

Most functions in this class implement operators investigated by Penney et al. [Penney G, et al., Similarity Measures for Use in 2D-3D Medical Image Registration, IEEE Trans Med Imaging 17(4):586-595, 1998 (August)] for use in registration of 2-D fluoroscopic images to 3-D CT volumes.

See also:

TypedArraySimilarity for implementation of all operators that do not require 2-D arrangement of pixels but work on the sequential pixel arrays.

Definition at line 65 of file cmtkScalarImageSimilarity.h.

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Member Enumeration Documentation

enum cmtk::ScalarImageSimilarity::ID

Identifiers for all available metrics.

Enumerator:

MI	Mutual information.
NMI	Normalized mutual information.
RMI	Regional mutual information.
RNMI	Regional normalized mutual information.
CR	Correlation ratio.
CC	Cross correlation.
MSD	Mean squared difference.
PSNR	Peak signal-to-noise ratio.
DAE	Difference array entropy.
GradientCorrelation	Gradient correlation.
PatternIntensity	Pattern intensity.

Reimplemented from cmtk::TypedArraySimilarity.

Definition at line 71 of file cmtkScalarImageSimilarity.h.

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Member Function Documentation

static ReturnType cmtk::ScalarImageSimilarity::GetMutualInformation	(	std::vector< const ScalarImage * > &	array0,
		std::vector< const ScalarImage * > &	array1,
		const bool	normalized = false
	)		[inline, static]

Compute mutual information between two sets of pixel arrays.

Definition at line 109 of file cmtkScalarImageSimilarity.h.

static ReturnType cmtk::ScalarImageSimilarity::GetNormalizedMutualInformation	(	std::vector< const ScalarImage * > &	array0,
		std::vector< const ScalarImage * > &	array1
	)		[inline, static]

Compute norrmalized mutual information between two sets of pixel arrays.

Definition at line 125 of file cmtkScalarImageSimilarity.h.

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

• libs/Registration/cmtkScalarImageSimilarity.h
• libs/Registration/cmtkScalarImageSimilarity.cxx
• libs/Registration/cmtkScalarImageSimilarityRMI.cxx