itkRegionBasedLevelSetFunctionSharedData.h

Go to the documentation of this file.

/*=========================================================================
 *
 *  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 itkRegionBasedLevelSetFunctionSharedData_h
#define itkRegionBasedLevelSetFunctionSharedData_h

#include "itkLightObject.h"

#include "itkVector.h"
#include "itkListSample.h"
#include "itkKdTreeGenerator.h"

#include "itkImageRegionIterator.h"
#include "itkImageRegionIteratorWithIndex.h"

namespace itk
{
template< typename TInputImage, typename TFeatureImage, typename TSingleData >
class RegionBasedLevelSetFunctionSharedData:public LightObject
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(RegionBasedLevelSetFunctionSharedData);

  using Self = RegionBasedLevelSetFunctionSharedData;
  using Superclass = LightObject;
  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;

  static constexpr unsigned int ImageDimension = TFeatureImage::ImageDimension;

  itkTypeMacro(RegionBasedLevelSetFunctionSharedData, LightObject);

  using InputImageType = TInputImage;
  using InputImagePointer = typename InputImageType::Pointer;
  using InputImageConstPointer = typename InputImageType::ConstPointer;
  using InputPixelType = typename InputImageType::PixelType;
  using InputRegionType = typename InputImageType::RegionType;
  using InputSizeType = typename InputImageType::SizeType;
  using InputSizeValueType = typename InputSizeType::SizeValueType;
  using InputSpacingType = typename InputImageType::SpacingType;
  using InputIndexType = typename InputImageType::IndexType;
  using InputIndexValueType = typename InputIndexType::IndexValueType;
  using InputPointType = typename InputImageType::PointType;

  using FeatureImageType = TFeatureImage;
  using FeatureImagePointer = typename FeatureImageType::Pointer;
  using FeatureImageConstPointer = typename FeatureImageType::ConstPointer;
  using FeaturePixelType = typename FeatureImageType::PixelType;
  using FeatureRegionType = typename FeatureImageType::RegionType;
  using FeatureSizeType = typename FeatureImageType::SizeType;
  using FeatureSizeValueType = typename FeatureSizeType::SizeValueType;
  using FeatureSpacingType = typename FeatureImageType::SpacingType;
  using FeatureIndexType = typename FeatureImageType::IndexType;
  using FeaturePointType = typename FeatureImageType::PointType;

  using ListPixelType = std::list< unsigned int >;
  using ListImageType =
      Image< ListPixelType, Self::ImageDimension >;
  using ListImagePointer = typename ListImageType::Pointer;
  using ListImageConstPointer = typename ListImageType::ConstPointer;
  using ListRegionType = typename ListImageType::RegionType;
  using ListSizeType = typename ListImageType::SizeType;
  using ListSizeValueType = typename ListSizeType::SizeValueType;
  using ListSpacingType = typename ListImageType::SpacingType;
  using ListIndexType = typename ListImageType::IndexType;
  using ListIndexValueType = typename ListIndexType::IndexValueType;
  using ListPointType = typename ListImageType::PointType;
  using ListIteratorType = ImageRegionIteratorWithIndex< ListImageType >;

  using CentroidVectorType =
      Vector< float, Self::ImageDimension >;
  using SampleType = itk::Statistics::ListSample< CentroidVectorType >;
  using TreeGeneratorType = itk::Statistics::KdTreeGenerator< SampleType >;
  using TreePointer = typename TreeGeneratorType::Pointer;
  using TreeType = typename TreeGeneratorType::KdTreeType;
  using KdTreePointer = typename TreeType::Pointer;

  using LevelSetDataType = TSingleData;
  using LevelSetDataPointer = typename LevelSetDataType::Pointer;
  using LevelSetDataPointerVector = std::vector< LevelSetDataPointer >;
  using LevelSetDataPointerVectorIterator = typename LevelSetDataPointerVector::iterator;

  void SetFunctionCount(const unsigned int & n)
  {
    this->m_FunctionCount = n;
    this->m_LevelSetDataPointerVector.resize(n, nullptr);

    auto it = m_LevelSetDataPointerVector.begin();
    auto end = m_LevelSetDataPointerVector.end();
    while ( it != end )
      {
      ( *it ) = LevelSetDataType::New();
      it++;
      }
  }

  void SetNumberOfNeighbors(const unsigned int & n)
  {
    this->m_NumberOfNeighbors = n;
  }

  void CreateHeavisideFunctionOfLevelSetImage(const unsigned int & j, const InputImageType *image)
  {
    m_LevelSetDataPointerVector[j]->CreateHeavisideFunctionOfLevelSetImage(image);
  }

  void SetKdTree(KdTreePointer kdtree)
  {
    this->m_KdTree = kdtree;
  }

  void AllocateListImage(const FeatureImageType *featureImage)
  {
    this->m_NearestNeighborListImage = ListImageType::New();
    this->m_NearestNeighborListImage->CopyInformation(featureImage);
    this->m_NearestNeighborListImage->SetRegions( featureImage->GetLargestPossibleRegion() );
    this->m_NearestNeighborListImage->Allocate();
  }

  virtual void PopulateListImage() = 0;

  LevelSetDataPointerVector m_LevelSetDataPointerVector;

  unsigned int     m_FunctionCount;
  unsigned int     m_NumberOfNeighbors;
  ListImagePointer m_NearestNeighborListImage;
  KdTreePointer    m_KdTree;

protected:
  RegionBasedLevelSetFunctionSharedData():m_NumberOfNeighbors(6), m_KdTree(nullptr){}
  ~RegionBasedLevelSetFunctionSharedData() override{}
};
} //end namespace itk

#endif