otbUnaryFunctorNeighborhoodVectorImageFilter.hxx

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/*
 * Copyright (C) 2005-2019 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 otbUnaryFunctorNeighborhoodVectorImageFilter_hxx
#define otbUnaryFunctorNeighborhoodVectorImageFilter_hxx

#include "otbUnaryFunctorNeighborhoodVectorImageFilter.h"
#include "itkImageRegionIterator.h"
#include "itkNeighborhoodAlgorithm.h"
#include "itkProgressReporter.h"

namespace otb
{

template <class TInputImage, class TOutputImage, class TFunction>
UnaryFunctorNeighborhoodVectorImageFilter<TInputImage, TOutputImage, TFunction>::UnaryFunctorNeighborhoodVectorImageFilter()
{
  this->SetNumberOfRequiredInputs(1);
  this->InPlaceOff();
  for (unsigned int i = 0; i < InputImageDimension; ++i)
    m_Radius[i]       = 3;
}

template <class TInputImage, class TOutputImage, class TFunction>
void UnaryFunctorNeighborhoodVectorImageFilter<TInputImage, TOutputImage, TFunction>::GenerateOutputInformation(void)
{
  Superclass::GenerateOutputInformation();

  this->GetOutput()->SetNumberOfComponentsPerPixel(this->GetInput()->GetNumberOfComponentsPerPixel());
}

template <class TInputImage, class TOutputImage, class TFunction>
void UnaryFunctorNeighborhoodVectorImageFilter<TInputImage, TOutputImage, TFunction>::ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread,
                                                                                                           itk::ThreadIdType threadId)
{

  InputImageRegionType inputRegionForThread;
  this->CallCopyOutputRegionToInputRegion(inputRegionForThread, outputRegionForThread);

  NeighborhoodIteratorType                           neighInputIt(this->GetRadius(), this->GetInput(), inputRegionForThread);
  itk::ZeroFluxNeumannBoundaryCondition<TInputImage> nbc;
  neighInputIt.OverrideBoundaryCondition(&nbc);
  neighInputIt.GoToBegin();

  itk::ImageRegionIterator<TOutputImage> outputIt(this->GetOutput(), outputRegionForThread);
  outputIt.GoToBegin();

  // support progress methods/callbacks
  itk::ProgressReporter progress(this, threadId, outputRegionForThread.GetNumberOfPixels());

  while (!outputIt.IsAtEnd() && !neighInputIt.IsAtEnd())
  {
    outputIt.Set(m_Functor(neighInputIt));

    ++neighInputIt;
    ++outputIt;

    progress.CompletedPixel();
  }
}

} // end namespace otb

#endif