otbRadiometricMomentsImageFunction.hxx

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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 otbRadiometricMomentsImageFunction_hxx
#define otbRadiometricMomentsImageFunction_hxx
 
#include "otbRadiometricMomentsImageFunction.h"
#include "itkMacro.h"
#include "itkVariableLengthVector.h"
#include <complex>
 
namespace otb
{
 
template <class TInputImage, class TCoordRep>
RadiometricMomentsImageFunction<TInputImage, TCoordRep>::RadiometricMomentsImageFunction()
{
  m_NeighborhoodRadius = 1;
}
 
template <class TInputImage, class TCoordRep>
void RadiometricMomentsImageFunction<TInputImage, TCoordRep>::PrintSelf(std::ostream& os, itk::Indent indent) const
{
  this->Superclass::PrintSelf(os, indent);
  os << indent << " Neighborhood radius value   : " << m_NeighborhoodRadius << std::endl;
}
 
template <class TInputImage, class TCoordRep>
typename RadiometricMomentsImageFunction<TInputImage, TCoordRep>::OutputType
RadiometricMomentsImageFunction<TInputImage, TCoordRep>::EvaluateAtIndex(const IndexType& index) const
{
  // Build moments vector
  OutputType moments;
 
  // Initialize moments
  moments.Fill(itk::NumericTraits<ScalarRealType>::Zero);
 
  // Check for input image
  if (!this->GetInputImage())
  {
    return moments;
  }
 
  // Check for out of buffer
  // Self* _this = const_cast<Self*>(this);
  //_this->SetInputImage( this->GetInputImage() );
  if (!this->IsInsideBuffer(index))
  {
    return moments;
  }
 
  // Create an N-d neighborhood kernel, using a zeroflux boundary condition
  typename InputImageType::SizeType kernelSize;
  kernelSize.Fill(m_NeighborhoodRadius);
 
  itk::ConstNeighborhoodIterator<InputImageType> it(kernelSize, this->GetInputImage(), this->GetInputImage()->GetBufferedRegion());
 
  // Set the iterator at the desired location
  it.SetLocation(index);
 
  itk::VariableLengthVector<ScalarRealType> tmp(m_Functor(it));
 
  for (unsigned int i = 0; i < 4; i++)
  {
    moments[i] = tmp[i];
  }
 
  // Return result
  return moments;
}
 
} // namespace otb
 
#endif