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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkMatrixOffsetTransformBase.txx.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:41 $ |
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Version: $Revision: 1.4 $ |
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Copyright (c) Insight Software Consortium. All rights reserved. |
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See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details. |
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This software is distributed WITHOUT ANY WARRANTY; without even |
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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PURPOSE. See the above copyright notices for more information. |
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=========================================================================*/ |
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DEF |
#ifndef _itkMatrixOffsetTransformBase_txx |
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DEF |
#define _itkMatrixOffsetTransformBase_txx |
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#include "itkNumericTraits.h" |
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#include "itkMatrixOffsetTransformBase.h" |
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#include "vnl/algo/vnl_matrix_inverse.h" |
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namespace itk |
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{ |
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// Constructor with default arguments |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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::MatrixOffsetTransformBase() |
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IND |
**: Superclass(OutputSpaceDimension, ParametersDimension) |
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{ |
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m_Matrix.SetIdentity(); |
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m_MatrixMTime.Modified(); |
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m_Offset.Fill( 0 ); |
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m_Center.Fill( 0 ); |
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m_Translation.Fill( 0 ); |
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m_Singular = false; |
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m_InverseMatrix.SetIdentity(); |
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m_InverseMatrixMTime = m_MatrixMTime; |
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this->m_FixedParameters.SetSize ( NInputDimensions ); |
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this->m_FixedParameters.Fill ( 0.0 ); |
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} |
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// Constructor with default arguments |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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::MatrixOffsetTransformBase( unsigned int outputDims, |
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unsigned int paramDims ) |
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IND |
**: Superclass(outputDims, paramDims) |
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{ |
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m_Matrix.SetIdentity(); |
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m_MatrixMTime.Modified(); |
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m_Offset.Fill( 0 ); |
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m_Center.Fill( 0 ); |
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m_Translation.Fill( 0 ); |
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m_Singular = false; |
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m_InverseMatrix.SetIdentity(); |
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m_InverseMatrixMTime = m_MatrixMTime; |
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} |
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|
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EML |
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EML |
|
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// Constructor with explicit arguments |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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::MatrixOffsetTransformBase(const MatrixType &matrix, |
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const OutputVectorType &offset) |
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{ |
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m_Matrix = matrix; |
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m_MatrixMTime.Modified(); |
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m_Offset = offset; |
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m_Center.Fill( 0 ); |
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m_Translation.Fill(0); |
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for(unsigned int i=0; i<NOutputDimensions; i++) |
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{ |
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m_Translation[i] = offset[i]; |
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} |
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this->ComputeMatrixParameters(); |
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} |
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EML |
|
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EML |
|
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// Destructor |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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::~MatrixOffsetTransformBase() |
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{ |
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return; |
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} |
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EML |
|
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// Print self |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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void |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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::PrintSelf(std::ostream &os, Indent indent) const |
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{ |
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Superclass::PrintSelf(os,indent); |
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unsigned int i, j; |
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os << indent << "Matrix: " << std::endl; |
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for (i = 0; i < NInputDimensions; i++) |
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{ |
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os << indent.GetNextIndent(); |
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for (j = 0; j < NOutputDimensions; j++) |
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{ |
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os << m_Matrix[i][j] << " "; |
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} |
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os << std::endl; |
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} |
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os << indent << "Offset: " << m_Offset << std::endl; |
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os << indent << "Center: " << m_Center << std::endl; |
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os << indent << "Translation: " << m_Translation << std::endl; |
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os << indent << "Inverse: " << std::endl; |
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for (i = 0; i < NInputDimensions; i++) |
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{ |
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os << indent.GetNextIndent(); |
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for (j = 0; j < NOutputDimensions; j++) |
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{ |
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os << this->GetInverseMatrix()[i][j] << " "; |
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} |
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os << std::endl; |
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} |
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os << indent << "Singular: " << m_Singular << std::endl; |
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} |
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// Constructor with explicit arguments |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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void |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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::SetIdentity( void ) |
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{ |
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m_Matrix.SetIdentity(); |
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m_MatrixMTime.Modified(); |
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m_Offset.Fill( 0.0 ); |
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m_Translation.Fill( 0.0 ); |
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m_Center.Fill( 0.0 ); |
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m_Singular = false; |
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m_InverseMatrix.SetIdentity(); |
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m_InverseMatrixMTime = m_MatrixMTime; |
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this->Modified(); |
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} |
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// Compose with another affine transformation |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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void |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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::Compose(const Self * other, bool pre) |
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{ |
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if (pre) |
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{ |
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m_Offset = m_Matrix * other->m_Offset + m_Offset; |
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m_Matrix = m_Matrix * other->m_Matrix; |
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} |
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else |
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{ |
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m_Offset = other->m_Matrix * m_Offset + other->m_Offset; |
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m_Matrix = other->m_Matrix * m_Matrix; |
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} |
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this->ComputeTranslation(); |
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this->ComputeMatrixParameters(); |
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m_MatrixMTime.Modified(); |
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this->Modified(); |
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return; |
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} |
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EML |
|
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// Transform a point |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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typename MatrixOffsetTransformBase<TScalarType, |
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NInputDimensions, |
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NOutputDimensions>::OutputPointType |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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::TransformPoint(const InputPointType &point) const |
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{ |
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return m_Matrix * point + m_Offset; |
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} |
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// Transform a vector |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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typename MatrixOffsetTransformBase<TScalarType, |
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NInputDimensions, |
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NOutputDimensions>::OutputVectorType |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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::TransformVector(const InputVectorType &vect) const |
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{ |
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return m_Matrix * vect; |
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} |
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// Transform a vnl_vector_fixed |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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typename MatrixOffsetTransformBase<TScalarType, |
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NInputDimensions, |
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NOutputDimensions>::OutputVnlVectorType |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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::TransformVector(const InputVnlVectorType &vect) const |
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{ |
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return m_Matrix * vect; |
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} |
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// Transform a CovariantVector |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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typename MatrixOffsetTransformBase<TScalarType, |
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NInputDimensions, |
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NOutputDimensions>::OutputCovariantVectorType |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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::TransformCovariantVector(const InputCovariantVectorType &vec) const |
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{ |
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OutputCovariantVectorType result; // Converted vector |
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for (unsigned int i = 0; i < NOutputDimensions; i++) |
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{ |
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result[i] = NumericTraits<ScalarType>::Zero; |
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for (unsigned int j = 0; j < NInputDimensions; j++) |
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{ |
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result[i] += this->GetInverseMatrix()[j][i]*vec[j]; // Inverse transposed |
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} |
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} |
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return result; |
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} |
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// Recompute the inverse matrix (internal) |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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const typename MatrixOffsetTransformBase<TScalarType, |
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NInputDimensions, |
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NOutputDimensions>::InverseMatrixType & |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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::GetInverseMatrix( void ) const |
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{ |
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// If the transform has been modified we recompute the inverse |
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if(m_InverseMatrixMTime != m_MatrixMTime) |
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{ |
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m_Singular = false; |
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try |
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{ |
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m_InverseMatrix = m_Matrix.GetInverse(); |
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} |
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catch(...) |
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{ |
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m_Singular = true; |
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} |
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IND |
*****m_InverseMatrixMTime = m_MatrixMTime; |
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} |
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return m_InverseMatrix; |
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} |
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// return an inverse transformation |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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bool |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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::GetInverse( Self * inverse) const |
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{ |
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if(!inverse) |
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{ |
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return false; |
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} |
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this->GetInverseMatrix(); |
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if(m_Singular) |
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{ |
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return false; |
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} |
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inverse->m_Matrix = this->GetInverseMatrix(); |
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inverse->m_InverseMatrix = m_Matrix; |
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inverse->m_Offset = -(this->GetInverseMatrix() * m_Offset); |
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inverse->ComputeTranslation(); |
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inverse->ComputeMatrixParameters(); |
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return true; |
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} |
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// Get fixed parameters |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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void |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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IND |
**::SetFixedParameters( const ParametersType & fp ) |
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{ |
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this->m_FixedParameters = fp; |
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InputPointType c; |
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for ( unsigned int i = 0; i < NInputDimensions; i++ ) |
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{ |
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c[i] = this->m_FixedParameters[i]; |
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} |
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this->SetCenter ( c ); |
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} |
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/** Get the Fixed Parameters. */ |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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const typename MatrixOffsetTransformBase<TScalarType, |
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NInputDimensions, |
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NOutputDimensions>::ParametersType & |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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IND |
**::GetFixedParameters(void) const |
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{ |
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this->m_FixedParameters.SetSize ( NInputDimensions ); |
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for ( unsigned int i = 0; i < NInputDimensions; i++ ) |
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{ |
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this->m_FixedParameters[i] = this->m_Center[i]; |
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} |
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return this->m_FixedParameters; |
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} |
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EML |
|
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// Get parameters |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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const typename MatrixOffsetTransformBase<TScalarType, |
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NInputDimensions, |
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NOutputDimensions>::ParametersType & |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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::GetParameters( void ) const |
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{ |
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// Transfer the linear part |
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unsigned int par = 0; |
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for(unsigned int row=0; row<NOutputDimensions; row++) |
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{ |
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for(unsigned int col=0; col<NInputDimensions; col++) |
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{ |
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this->m_Parameters[par] = m_Matrix[row][col]; |
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++par; |
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} |
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} |
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// Transfer the constant part |
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for(unsigned int i=0; i<NOutputDimensions; i++) |
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{ |
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this->m_Parameters[par] = m_Translation[i]; |
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++par; |
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} |
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return this->m_Parameters; |
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} |
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|
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// Set parameters |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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void |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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::SetParameters( const ParametersType & parameters ) |
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{ |
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unsigned int par = 0; |
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this->m_Parameters = parameters; |
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|
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for(unsigned int row=0; row<NOutputDimensions; row++) |
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{ |
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for(unsigned int col=0; col<NInputDimensions; col++) |
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{ |
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m_Matrix[row][col] = this->m_Parameters[par]; |
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++par; |
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} |
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} |
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|
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// Transfer the constant part |
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for(unsigned int i=0; i<NOutputDimensions; i++) |
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{ |
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m_Translation[i] = this->m_Parameters[par]; |
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++par; |
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} |
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|
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m_MatrixMTime.Modified(); |
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|
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this->ComputeMatrix(); // Not necessary since parameters explicitly define |
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IND |
**************************// the matrix |
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this->ComputeOffset(); |
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|
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this->Modified(); |
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|
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} |
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|
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|
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// Compute the Jacobian in one position |
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template<class TScalarType, unsigned int NInputDimensions, |
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unsigned int NOutputDimensions> |
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LEN |
const typename MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions>::JacobianType & |
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MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
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::GetJacobian( const InputPointType & p ) const |
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{ |
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// The Jacobian of the affine transform is composed of |
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// subblocks of diagonal matrices, each one of them having |
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// a constant value in the diagonal. |
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|
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this->m_Jacobian.Fill( 0.0 ); |
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|
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unsigned int blockOffset = 0; |
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|
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for(unsigned int block=0; block < NInputDimensions; block++) |
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{ |
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for(unsigned int dim=0; dim < NOutputDimensions; dim++ ) |
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{ |
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this->m_Jacobian( block , blockOffset + dim ) = p[dim]; |
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} |
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|
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blockOffset += NInputDimensions; |
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|
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} |
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|
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for(unsigned int dim=0; dim < NOutputDimensions; dim++ ) |
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{ |
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this->m_Jacobian( dim , blockOffset + dim ) = 1.0; |
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} |
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|
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return this->m_Jacobian; |
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|
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} |
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|
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// Computes offset based on center, matrix, and translation variables |
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|
template<class TScalarType, unsigned int NInputDimensions, |
| 447 |
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unsigned int NOutputDimensions> |
| 448 |
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void |
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|
MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
| 450 |
|
::ComputeOffset( void ) |
| 451 |
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{ |
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const MatrixType & matrix = this->GetMatrix(); |
| 453 |
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|
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OffsetType offset; |
| 455 |
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for(unsigned int i=0; i<NOutputDimensions; i++) |
| 456 |
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{ |
| 457 |
|
offset[i] = m_Translation[i] + m_Center[i]; |
| 458 |
|
for(unsigned int j=0; j<NInputDimensions; j++) |
| 459 |
|
{ |
| 460 |
|
offset[i] -= matrix[i][j] * m_Center[j]; |
| 461 |
|
} |
| 462 |
|
} |
| 463 |
|
|
| 464 |
SEM |
m_Offset = offset ; |
| 465 |
|
} |
| 466 |
|
|
| 467 |
|
// Computes translation based on offset, matrix, and center |
| 468 |
|
template<class TScalarType, unsigned int NInputDimensions, |
| 469 |
|
unsigned int NOutputDimensions> |
| 470 |
|
void |
| 471 |
|
MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
| 472 |
|
::ComputeTranslation( void ) |
| 473 |
|
{ |
| 474 |
|
const MatrixType & matrix = this->GetMatrix(); |
| 475 |
|
|
| 476 |
|
OffsetType translation; |
| 477 |
|
for(unsigned int i=0; i<NOutputDimensions; i++) |
| 478 |
|
{ |
| 479 |
|
translation[i] = m_Offset[i] - m_Center[i]; |
| 480 |
|
for(unsigned int j=0; j<NInputDimensions; j++) |
| 481 |
|
{ |
| 482 |
|
translation[i] += matrix[i][j] * m_Center[j]; |
| 483 |
|
} |
| 484 |
|
} |
| 485 |
|
|
| 486 |
SEM |
m_Translation = translation ; |
| 487 |
|
} |
| 488 |
|
|
| 489 |
|
|
| 490 |
|
// Computes matrix - base class does nothing. In derived classes is |
| 491 |
|
// used to convert, for example, versor into a matrix |
| 492 |
|
template<class TScalarType, unsigned int NInputDimensions, |
| 493 |
|
unsigned int NOutputDimensions> |
| 494 |
|
void |
| 495 |
|
MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
| 496 |
|
::ComputeMatrix( void ) |
| 497 |
|
{ |
| 498 |
|
// Since parameters explicitly define the matrix in this base class, this |
| 499 |
|
// function does nothing. Normally used to compute a matrix when |
| 500 |
|
// its parameterization (e.g., the class' versor) is modified. |
| 501 |
|
} |
| 502 |
|
|
| 503 |
|
|
| 504 |
|
// Computes parameters - base class does nothing. In derived classes is |
| 505 |
|
// used to convert, for example, matrix into a versor |
| 506 |
|
template<class TScalarType, unsigned int NInputDimensions, |
| 507 |
|
unsigned int NOutputDimensions> |
| 508 |
|
void |
| 509 |
|
MatrixOffsetTransformBase<TScalarType, NInputDimensions, NOutputDimensions> |
| 510 |
|
::ComputeMatrixParameters( void ) |
| 511 |
|
{ |
| 512 |
|
// Since parameters explicitly define the matrix in this base class, this |
| 513 |
|
// function does nothing. Normally used to update the parameterization |
| 514 |
|
// of the matrix (e.g., the class' versor) when the matrix is explicitly |
| 515 |
|
// set. |
| 516 |
|
} |
| 517 |
|
|
| 518 |
|
} // namespace |
| 519 |
|
|
| 520 |
|
#endif |
| 521 |
|
|
| 522 |
EOF |
|