itkLabelImageGenericInterpolateImageFunction.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 itkLabelImageGenericInterpolateImageFunction_h
#define itkLabelImageGenericInterpolateImageFunction_h

#include <itkInterpolateImageFunction.h>
#include "itkLabelSelectionImageAdaptor.h"
#include <vector>
#include <set>

namespace itk
{

template <typename TInputImage,template<class, typename> class TInterpolator, typename TCoordRep=double >
class ITK_EXPORT LabelImageGenericInterpolateImageFunction :
  public InterpolateImageFunction<TInputImage, TCoordRep>
{
public:
  typedef LabelImageGenericInterpolateImageFunction                Self;
  typedef InterpolateImageFunction<TInputImage, TCoordRep>         Superclass;
  typedef SmartPointer<Self>                                       Pointer;
  typedef SmartPointer<const Self>                                 ConstPointer;
  typedef typename TInputImage::PixelType                          InputPixelType;

  itkTypeMacro( LabelImageGenericInterpolateImageFunction, InterpolateImageFunction );

  itkNewMacro( Self );

  itkStaticConstMacro( ImageDimension, unsigned int, TInputImage::ImageDimension );

  typedef typename Superclass::OutputType OutputType;

  typedef typename Superclass::InputImageType InputImageType;

  typedef typename Superclass::RealType RealType;

  typedef typename Superclass::IndexType IndexType;

  typedef typename Superclass::ContinuousIndexType ContinuousIndexType;

  typedef LabelSelectionImageAdaptor<TInputImage,double> LabelSelectionAdaptorType;

  // The interpolator used for individual binary masks corresponding to each label
  typedef TInterpolator<LabelSelectionAdaptorType,TCoordRep> InternalInterpolatorType;

  virtual OutputType EvaluateAtContinuousIndex(
    const ContinuousIndexType & cindex ) const
    {
    return this->EvaluateAtContinuousIndex( cindex, NULL );
    }

  virtual void SetInputImage( const TInputImage *image );

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

  std::vector<typename InternalInterpolatorType::Pointer>   m_InternalInterpolators;
  std::vector<typename LabelSelectionAdaptorType::Pointer>  m_LabelSelectionAdaptors;
  typedef std::set<typename TInputImage::PixelType>         LabelSetType;
  LabelSetType m_Labels;

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

  virtual OutputType EvaluateAtContinuousIndex(
    const ContinuousIndexType &, OutputType * ) const;
};

} // end namespace itk

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

#endif