itkPCAShapeSignedDistanceFunction.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkPCAShapeSignedDistanceFunction.h,v $
  Language:  C++
  Date:      $Date: 2005/03/13 01:29:33 $
  Version:   $Revision: 1.7 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef _itkPCAShapeSignedDistanceFunction_h
#define _itkPCAShapeSignedDistanceFunction_h


#include "itkShapeSignedDistanceFunction.h"
#include "itkImage.h"
#include "itkInterpolateImageFunction.h"
#include "itkExtrapolateImageFunction.h"
#include "itkTransform.h"

namespace itk
{


template< typename TCoordRep, 
          unsigned int VSpaceDimension,
          typename TImage = Image<double,VSpaceDimension> >
class ITK_EXPORT PCAShapeSignedDistanceFunction : 
  public ShapeSignedDistanceFunction<TCoordRep, VSpaceDimension>
{

public:
  typedef PCAShapeSignedDistanceFunction          Self;
  typedef ShapeSignedDistanceFunction<
    TCoordRep, VSpaceDimension>                   Superclass;
  typedef SmartPointer<Self>                      Pointer;
  typedef SmartPointer<const Self>                ConstPointer;
  

  itkTypeMacro(PCAShapeSignedDistanceFunction, ShapeSignedDistancFunction);

  itkNewMacro(Self);

  itkStaticConstMacro(SpaceDimension,unsigned int,Superclass::SpaceDimension);


  typedef typename Superclass::CoordRepType       CoordRepType;

  typedef typename Superclass::InputType          InputType;

  typedef typename Superclass::OutputType         OutputType;
  
  typedef typename Superclass::PointType          PointType;

  typedef typename Superclass::ParametersType     ParametersType;


  typedef TImage                                  ImageType;
  typedef typename ImageType::Pointer             ImagePointer;
  typedef std::vector<ImagePointer>               ImagePointerVector;

  typedef Transform<CoordRepType, 
                    itkGetStaticConstMacro(SpaceDimension), 
                    itkGetStaticConstMacro(SpaceDimension)> TransformType;

  typedef InterpolateImageFunction<ImageType, CoordRepType> InterpolatorType;
  typedef typename InterpolatorType::Pointer                InterpolatorPointer;
  typedef std::vector<InterpolatorPointer>                  InterpolatorPointerVector;

  typedef ExtrapolateImageFunction<ImageType, CoordRepType> ExtrapolatorType;
  typedef typename ExtrapolatorType::Pointer                ExtrapolatorPointer;
  typedef std::vector<ExtrapolatorPointer>                  ExtrapolatorPointerVector;

  typedef ImageFunction<ImageType, double, CoordRepType> FunctionType;
  typedef typename FunctionType::Pointer                 FunctionPointer;
  typedef std::vector<FunctionPointer>                   FunctionPointerVector;


  void SetNumberOfPrincipalComponents(unsigned int n);
  itkGetMacro(NumberOfPrincipalComponents, unsigned int);

  itkSetObjectMacro(MeanImage, ImageType);
  itkGetObjectMacro(MeanImage, ImageType);

  void SetPrincipalComponentImages(ImagePointerVector v)
    { m_PrincipalComponentImages = v; }
//  ImagePointerVector & GetPrincipalComponentImages()
//    { return m_PrincipalComponentImages; }

  itkSetMacro(PrincipalComponentStandardDeviations, ParametersType);
  itkGetMacro(PrincipalComponentStandardDeviations, ParametersType);

  itkSetObjectMacro(Transform, TransformType);
  itkGetObjectMacro(Transform, TransformType);


  virtual void SetParameters( const ParametersType & );
  virtual unsigned int GetNumberOfShapeParameters(void) const
    { return m_NumberOfPrincipalComponents; }
  virtual unsigned int GetNumberOfPoseParameters(void) const
    { return m_Transform ? m_Transform->GetNumberOfParameters() : 0; }

  virtual OutputType Evaluate(const PointType& point) const;

  virtual void Initialize() throw ( ExceptionObject );


protected:
  PCAShapeSignedDistanceFunction();
  ~PCAShapeSignedDistanceFunction(){};

  void PrintSelf(std::ostream& os, Indent indent) const;


private:
  PCAShapeSignedDistanceFunction(const Self&); //purposely not implemented
  void operator=( const Self& ); //purposely not implemented


  unsigned int                  m_NumberOfPrincipalComponents;
  unsigned int                  m_NumberOfTransformParameters;

  ImagePointer                  m_MeanImage;
  ImagePointerVector            m_PrincipalComponentImages;
  ParametersType                m_PrincipalComponentStandardDeviations;

  typename TransformType::Pointer        m_Transform;
  InterpolatorPointerVector              m_Interpolators;
  ExtrapolatorPointerVector              m_Extrapolators;
  mutable FunctionPointerVector          m_Selectors;

  ParametersType                m_WeightOfPrincipalComponents;
  ParametersType                m_TransformParameters;         

};

} // namespace itk

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

#endif

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