itkPCAShapeSignedDistanceFunction.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#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 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);

  itkGetConstMacro(NumberOfPrincipalComponents, unsigned int);

  itkSetObjectMacro(MeanImage, ImageType);
  itkGetModifiableObjectMacro(MeanImage, ImageType);

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

  itkSetMacro(PrincipalComponentStandardDeviations, ParametersType);
  itkGetConstMacro(PrincipalComponentStandardDeviations, ParametersType);

  itkSetObjectMacro(Transform, TransformType);
  itkGetModifiableObjectMacro(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;
};
} // end namespace itk

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

#endif