itk::detail Namespace Reference

Functions
template<typename TValueType , unsigned int VRows, unsigned int VColumns>
const TValueType *	GetPointerToMatrixData (const itk::Matrix< TValueType, VRows, VColumns > &inputMatrix)
template<typename TValueType >
const TValueType *	GetPointerToMatrixData (const vnl_matrix< TValueType > &inputMatrix)
template<typename TValueType , unsigned int VRows, unsigned int VColumns>
const TValueType *	GetPointerToMatrixData (const vnl_matrix_fixed< TValueType, VRows, VColumns > &inputMatrix)
template<typename TArray >
std::vector< int >	sortEigenValuesByMagnitude (TArray &eigenValues, const unsigned int numberOfElements)
template<typename QMatrix >
void	permuteColumnsWithSortIndices (QMatrix &eigenVectors, const std::vector< int > &indicesSortPermutations)

Function Documentation

GetPointerToMatrixData() [1/3]

template<typename TValueType , unsigned int VRows, unsigned int VColumns>

const TValueType* itk::detail::GetPointerToMatrixData

(

const itk::Matrix< TValueType, VRows, VColumns > &

inputMatrix

)

Definition at line 51 of file itkSymmetricEigenAnalysis.h.

References itk::Matrix< T, VRows, VColumns >::GetVnlMatrix().

Referenced by itk::SymmetricEigenAnalysis< TInputImage::PixelType, TOutputImage::PixelType >::ComputeEigenValuesAndVectorsWithEigenLibraryImpl(), itk::SymmetricEigenAnalysisFixedDimension< TMatrixDimension, TInput, TOutput >::ComputeEigenValuesAndVectorsWithEigenLibraryImpl(), itk::SymmetricEigenAnalysis< TInputImage::PixelType, TOutputImage::PixelType >::ComputeEigenValuesWithEigenLibraryImpl(), and itk::SymmetricEigenAnalysisFixedDimension< TMatrixDimension, TInput, TOutput >::ComputeEigenValuesWithEigenLibraryImpl().

GetPointerToMatrixData() [2/3]

template<typename TValueType >

const TValueType* itk::detail::GetPointerToMatrixData

(

const vnl_matrix< TValueType > &

inputMatrix

)

Definition at line 44 of file itkSymmetricEigenAnalysis.h.

GetPointerToMatrixData() [3/3]

template<typename TValueType , unsigned int VRows, unsigned int VColumns>

const TValueType* itk::detail::GetPointerToMatrixData

(

const vnl_matrix_fixed< TValueType, VRows, VColumns > &

inputMatrix

)

Definition at line 38 of file itkSymmetricEigenAnalysis.h.

permuteColumnsWithSortIndices()

template<typename QMatrix >

void itk::detail::permuteColumnsWithSortIndices	(	QMatrix &	eigenVectors,
		const std::vector< int > &	indicesSortPermutations
	)

Permute a eigenVectors matrix according to the permutation indices computed from the output of a sort function like

See also

detail::sortEigenValuesByMagnitude

Template Parameters

QMatrix

a Eigen3 matrix

Parameters

eigenVectors	stored in columns
indicesSortPermutations	container with the permutations from the output of a sort function.

Definition at line 102 of file itkSymmetricEigenAnalysis.h.

Referenced by itk::SymmetricEigenAnalysis< TInputImage::PixelType, TOutputImage::PixelType >::ComputeEigenValuesAndVectorsWithEigenLibraryImpl(), and itk::SymmetricEigenAnalysisFixedDimension< TMatrixDimension, TInput, TOutput >::ComputeEigenValuesAndVectorsWithEigenLibraryImpl().

sortEigenValuesByMagnitude()

template<typename TArray >

std::vector<int> itk::detail::sortEigenValuesByMagnitude	(	TArray &	eigenValues,
		const unsigned int	numberOfElements
	)

Sort input to be ordered by magnitude, and returns container with the permutations required for the sorting.

For example, if input eigenValues = {10, 0, 40}, the output would be: {2,0,1} and the eigenValues would be modified in-place: {40, 10, 0}.

The permutations indices is used to order the matrix of eigenVectors.

See also

permuteEigenVectorsWithSortPermutations

Template Parameters

TArray

array type with operator []

Parameters

eigenValues	input array, requires operator []
numberOfElements	size of array

Returns

the permutations needed to sort the input array

Definition at line 73 of file itkSymmetricEigenAnalysis.h.

References itk::Math::abs().

Referenced by itk::SymmetricEigenAnalysis< TInputImage::PixelType, TOutputImage::PixelType >::ComputeEigenValuesAndVectorsWithEigenLibraryImpl(), itk::SymmetricEigenAnalysisFixedDimension< TMatrixDimension, TInput, TOutput >::ComputeEigenValuesAndVectorsWithEigenLibraryImpl(), itk::SymmetricEigenAnalysis< TInputImage::PixelType, TOutputImage::PixelType >::ComputeEigenValuesWithEigenLibraryImpl(), and itk::SymmetricEigenAnalysisFixedDimension< TMatrixDimension, TInput, TOutput >::ComputeEigenValuesWithEigenLibraryImpl().