otbMultivariateAlterationDetectorImageFilter.h

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/*
 * Copyright (C) 2005-2022 Centre National d'Etudes Spatiales (CNES)
 *
 * This file is part of Orfeo Toolbox
 *
 *     https://www.orfeo-toolbox.org/
 *
 * 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
 *
 * 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 otbMultivariateAlterationDetectorImageFilter_h
#define otbMultivariateAlterationDetectorImageFilter_h
 
 
#include "otbStreamingStatisticsVectorImageFilter.h"
#include "otbConcatenateVectorImageFilter.h"
 
#include "vnl/vnl_vector.h"
#include "vnl/vnl_matrix.h"
 
namespace otb
{
 
template <class TInputImage, class TOutputImage>
class ITK_EXPORT MultivariateAlterationDetectorImageFilter : public itk::ImageToImageFilter<TInputImage, TOutputImage>
{
public:
  typedef MultivariateAlterationDetectorImageFilter Self;
  typedef itk::ImageToImageFilter<TInputImage, TOutputImage> Superclass;
  typedef itk::SmartPointer<Self>       Pointer;
  typedef itk::SmartPointer<const Self> ConstPointer;
 
  itkNewMacro(Self);
 
  itkTypeMacro(MultivariateAlterationDetectorImageFilter, ImageToImageFilter);
 
  typedef TInputImage                           InputImageType;
  typedef typename InputImageType::Pointer      InputImagePointer;
  typedef typename InputImageType::ConstPointer InputImageConstPointer;
  typedef typename InputImageType::RegionType   InputImageRegionType;
  typedef typename InputImageType::PixelType    InputImagePixelType;
  typedef TOutputImage                          OutputImageType;
  typedef typename OutputImageType::Pointer     OutputImagePointer;
  typedef typename OutputImageType::RegionType  OutputImageRegionType;
  typedef typename OutputImageType::PixelType   OutputImagePixelType;
 
  typedef StreamingStatisticsVectorImageFilter<InputImageType> CovarianceEstimatorType;
  typedef typename CovarianceEstimatorType::Pointer            CovarianceEstimatorPointer;
  typedef otb::ConcatenateVectorImageFilter<InputImageType, InputImageType, InputImageType> ConcatenateImageFilterType;
  typedef typename ConcatenateImageFilterType::Pointer ConcatenateImageFilterPointer;
 
  typedef typename CovarianceEstimatorType::MatrixObjectType MatrixObjectType;
  typedef typename MatrixObjectType::ComponentType           MatrixType;
  typedef typename MatrixType::InternalMatrixType            InternalMatrixType;
  typedef typename CovarianceEstimatorType::RealPixelType    VectorType;
 
  typedef typename VectorType::ValueType RealType;
 
  typedef vnl_vector<RealType> VnlVectorType;
  typedef vnl_matrix<RealType> VnlMatrixType;
 
  itkGetMacro(Mean1, VnlVectorType);
 
  itkGetMacro(Mean2, VnlVectorType);
 
  itkGetMacro(V1, VnlMatrixType);
 
  itkGetMacro(V2, VnlMatrixType);
 
  itkGetMacro(Rho, VnlVectorType);
 
  itkGetObjectMacro(CovarianceEstimator, CovarianceEstimatorType);
 
  void SetInput1(const TInputImage* image1);
 
  void SetInput2(const TInputImage* image2);
 
  const TInputImage* GetInput1();
  const TInputImage* GetInput2();
 
protected:
  MultivariateAlterationDetectorImageFilter();
  ~MultivariateAlterationDetectorImageFilter() override
  {
  }
 
  void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread, itk::ThreadIdType threadId) override;
 
  void GenerateOutputInformation() override;
 
private:
  MultivariateAlterationDetectorImageFilter(const Self&) = delete;
  void operator=(const Self&) = delete;
 
  CovarianceEstimatorPointer m_CovarianceEstimator;
  MatrixType                 m_CovarianceMatrix;
  VectorType                 m_MeanValues;
 
  VnlMatrixType m_V1;
  VnlMatrixType m_V2;
  VnlVectorType m_Mean1;
  VnlVectorType m_Mean2;
  VnlVectorType m_Rho;
};
 
} // end namespace otb
 
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbMultivariateAlterationDetectorImageFilter.hxx"
#endif
 
#endif