itkDiffusionTensor3DFSAffineTransform.h

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/*=========================================================================

  Program:   Diffusion Applications
  Module:    $HeadURL: http://svn.slicer.org/Slicer3/trunk/Applications/CLI/DiffusionApplications/ResampleDTI/itkDiffusionTensor3DFSAffineTransform.h $
  Language:  C++
  Date:      $Date: 2010-03-15 18:00:34 -0400 (Mon, 15 Mar 2010) $
  Version:   $Revision: 12353 $

  Copyright (c) Brigham and Women's Hospital (BWH) All Rights Reserved.

  See License.txt or http://www.slicer.org/copyright/copyright.txt for details.

==========================================================================*/
#ifndef __itkDiffusionTensor3DFSAffineTransform_h
#define __itkDiffusionTensor3DFSAffineTransform_h


#include "itkDiffusionTensor3DAffineTransform.h"
#include <vnl/vnl_matrix.h>
#include <vnl/algo/vnl_real_eigensystem.h>
#include <vnl/vnl_real.h>



namespace itk
{
template<class TData>
class DiffusionTensor3DFSAffineTransform :
  public DiffusionTensor3DAffineTransform< TData >
{
public:
  typedef TData DataType ;
  typedef DiffusionTensor3DFSAffineTransform Self ;
  typedef DiffusionTensor3DAffineTransform< DataType > Superclass ;
  typedef typename Superclass::MatrixTransformType MatrixTransformType;
  typedef typename Superclass::InternalMatrixTransformType InternalMatrixTransformType ;
  typedef SmartPointer< Self > Pointer ;
  typedef SmartPointer< const Self > ConstPointer ;
  
  itkNewMacro(Self);


protected:
  void PreCompute();

private:
  MatrixTransformType ComputeMatrixSquareRoot( MatrixTransformType matrix ) ;
  MatrixTransformType ComputeRotationMatrixFromTransformationMatrix() ;

};

}//end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkDiffusionTensor3DFSAffineTransform.txx"
#endif

#endif