itkMultiInputImageRandomCoordinateSampler.h

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 *  Copyright UMC Utrecht and contributors
 *
 *  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
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 *        http://www.apache.org/licenses/LICENSE-2.0.txt
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 *  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
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#ifndef __MultiInputImageRandomCoordinateSampler_h
#define __MultiInputImageRandomCoordinateSampler_h
 
#include "itkImageRandomSamplerBase.h"
#include "itkInterpolateImageFunction.h"
#include "itkBSplineInterpolateImageFunction.h"
#include "itkMersenneTwisterRandomVariateGenerator.h"
 
namespace itk
{
 
template< class TInputImage >
class MultiInputImageRandomCoordinateSampler :
  public ImageRandomSamplerBase< TInputImage >
{
public:
 
  typedef MultiInputImageRandomCoordinateSampler Self;
  typedef ImageRandomSamplerBase< TInputImage >  Superclass;
  typedef SmartPointer< Self >                   Pointer;
  typedef SmartPointer< const Self >             ConstPointer;
 
  itkNewMacro( Self );
 
  itkTypeMacro( MultiInputImageRandomCoordinateSampler, ImageRandomSamplerBase );
 
  typedef typename Superclass::DataObjectPointer            DataObjectPointer;
  typedef typename Superclass::OutputVectorContainerType    OutputVectorContainerType;
  typedef typename Superclass::OutputVectorContainerPointer OutputVectorContainerPointer;
  typedef typename Superclass::InputImageType               InputImageType;
  typedef typename Superclass::InputImagePointer            InputImagePointer;
  typedef typename Superclass::InputImageConstPointer       InputImageConstPointer;
  typedef typename Superclass::InputImageRegionType         InputImageRegionType;
  typedef typename Superclass::InputImagePixelType          InputImagePixelType;
  typedef typename Superclass::ImageSampleType              ImageSampleType;
  typedef typename Superclass::ImageSampleContainerType     ImageSampleContainerType;
  typedef typename Superclass::MaskType                     MaskType;
  typedef typename Superclass::InputImageSizeType           InputImageSizeType;
  typedef typename InputImageType::SpacingType              InputImageSpacingType;
  typedef typename Superclass::InputImageIndexType          InputImageIndexType;
  typedef typename Superclass::InputImagePointType          InputImagePointType;
  typedef typename Superclass::InputImagePointValueType     InputImagePointValueType;
  typedef typename Superclass::ImageSampleValueType         ImageSampleValueType;
 
  itkStaticConstMacro( InputImageDimension, unsigned int,
    Superclass::InputImageDimension );
 
  typedef double                                                                  CoordRepType;
  typedef InterpolateImageFunction< InputImageType, CoordRepType >                InterpolatorType;
  typedef typename InterpolatorType::Pointer                                      InterpolatorPointer;
  typedef BSplineInterpolateImageFunction< InputImageType, CoordRepType, double > DefaultInterpolatorType;
 
  typedef itk::Statistics::MersenneTwisterRandomVariateGenerator RandomGeneratorType;
  typedef typename RandomGeneratorType::Pointer                  RandomGeneratorPointer;
 
  itkSetObjectMacro( Interpolator, InterpolatorType );
  itkGetModifiableObjectMacro( Interpolator, InterpolatorType );
 
  itkSetMacro( SampleRegionSize, InputImageSpacingType );
  itkGetConstReferenceMacro( SampleRegionSize, InputImageSpacingType );
 
  itkGetConstMacro( UseRandomSampleRegion, bool );
  itkSetMacro( UseRandomSampleRegion, bool );
 
protected:
 
  typedef typename InterpolatorType::ContinuousIndexType InputImageContinuousIndexType;
 
  MultiInputImageRandomCoordinateSampler();
 
  ~MultiInputImageRandomCoordinateSampler() override {}
 
  void PrintSelf( std::ostream & os, Indent indent ) const override;
 
  void GenerateData( void ) override;
 
  virtual void GenerateRandomCoordinate(
    const InputImageContinuousIndexType & smallestContIndex,
    const InputImageContinuousIndexType & largestContIndex,
    InputImageContinuousIndexType &       randomContIndex );
 
  InterpolatorPointer    m_Interpolator;
  RandomGeneratorPointer m_RandomGenerator;
  InputImageSpacingType  m_SampleRegionSize;
 
  virtual void GenerateSampleRegion(
    InputImageContinuousIndexType & smallestContIndex,
    InputImageContinuousIndexType & largestContIndex );
 
private:
 
  MultiInputImageRandomCoordinateSampler( const Self & );           // purposely not implemented
  void operator=( const Self & );             // purposely not implemented
 
  bool m_UseRandomSampleRegion;
 
};
 
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkMultiInputImageRandomCoordinateSampler.hxx"
#endif
 
#endif // end #ifndef __MultiInputImageRandomCoordinateSampler_h