itkKdTreeGenerator.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  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 itkKdTreeGenerator_h
#define itkKdTreeGenerator_h
 
#include <vector>
 
#include "itkKdTree.h"
#include "itkStatisticsAlgorithm.h"
 
namespace itk
{
namespace Statistics
{
template <typename TSample>
class ITK_TEMPLATE_EXPORT KdTreeGenerator : public Object
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(KdTreeGenerator);
 
  using Self = KdTreeGenerator;
  using Superclass = Object;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;
 
  itkTypeMacro(KdTreeGenerator, Object);
 
  itkNewMacro(Self);
 
  using MeasurementVectorType = typename TSample::MeasurementVectorType;
  using MeasurementType = typename TSample::MeasurementType;
 
  using MeasurementVectorSizeType = unsigned int;
 
  using KdTreeType = KdTree<TSample>;
 
  using OutputType = KdTreeType;
 
  using OutputPointer = typename KdTreeType::Pointer;
 
  using KdTreeNodeType = typename KdTreeType::KdTreeNodeType;
 
  using SubsampleType = Subsample<TSample>;
 
  using SubsamplePointer = typename SubsampleType::Pointer;
 
  void
  SetSample(TSample * sample);
 
  void
  SetBucketSize(unsigned int size);
 
  OutputPointer
  GetOutput()
  {
    return m_Tree;
  }
 
  void
  Update()
  {
    this->GenerateData();
  }
 
  void
  GenerateData();
 
  itkGetConstMacro(MeasurementVectorSize, unsigned int);
 
protected:
  KdTreeGenerator();
 
  ~KdTreeGenerator() override = default;
 
  void
  PrintSelf(std::ostream & os, Indent indent) const override;
 
  SubsamplePointer
  GetSubsample()
  {
    return m_Subsample;
  }
 
  virtual KdTreeNodeType *
  GenerateNonterminalNode(unsigned int            beginIndex,
                          unsigned int            endIndex,
                          MeasurementVectorType & lowerBound,
                          MeasurementVectorType & upperBound,
                          unsigned int            level);
 
  KdTreeNodeType *
  GenerateTreeLoop(unsigned int            beginIndex,
                   unsigned int            endIndex,
                   MeasurementVectorType & lowerBound,
                   MeasurementVectorType & upperBound,
                   unsigned int            level);
 
private:
  TSample * m_SourceSample;
 
  SubsamplePointer m_Subsample;
 
  unsigned int m_BucketSize;
 
  OutputPointer m_Tree;
 
  MeasurementVectorType m_TempLowerBound;
 
  MeasurementVectorType m_TempUpperBound;
 
  MeasurementVectorType m_TempMean;
 
  MeasurementVectorSizeType m_MeasurementVectorSize;
}; // end of class
} // end of namespace Statistics
} // end of namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkKdTreeGenerator.hxx"
#endif
 
#endif