File: otbOneRIBandImageToOneComplexBandImage.hxx

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/*
 * Copyright (C) 2005-2020 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 otbOneRIBandImageToOneComplexBandImage_hxx
#define otbOneRIBandImageToOneComplexBandImage_hxx

#include "otbOneRIBandImageToOneComplexBandImage.h"

#include "itkImageRegionIterator.h"
#include "itkImageRegionConstIterator.h"
#include "itkProgressReporter.h"

namespace otb
{

/**
 *
 */
template <class TInputImage, class TOutputImage>
OneRIBandImageToOneComplexBandImage<TInputImage, TOutputImage>::OneRIBandImageToOneComplexBandImage()
{
  // this->SetNumberOfThreads(1);
}

/**
 * BeforeThreadedGenerateData
 */
template <class TInputImage, class TOutputImage>
void OneRIBandImageToOneComplexBandImage<TInputImage, TOutputImage>::BeforeThreadedGenerateData(void)
{
  if (this->GetInput()->GetNumberOfComponentsPerPixel() != 2)
    itkExceptionMacro("Input image must be made of two bands and only two.");
}

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

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

  typename OutputImageType::Pointer     output = this->GetOutput();
  typename InputImageType::ConstPointer input  = this->GetInput();

  itk::ImageRegionIterator<OutputImageType>  it;
  itk::ImageRegionConstIterator<TInputImage> itIn;

  itIn = itk::ImageRegionConstIterator<TInputImage>(input, outputRegionForThread);
  it   = itk::ImageRegionIterator<OutputImageType>(output, outputRegionForThread);

  it.GoToBegin();
  itIn.GoToBegin();
  while (!it.IsAtEnd())
  {

    it.Set(static_cast<OutputPixelType>(std::complex<typename InputPixelType::ValueType>(itIn.Get()[0], itIn.Get()[1])));

    ++it;
    ++itIn;
    progress.CompletedPixel();
  }
}

/**
 * Standard "PrintSelf" method
 */
template <class TInputImage, class TOutput>
void OneRIBandImageToOneComplexBandImage<TInputImage, TOutput>::PrintSelf(std::ostream& os, itk::Indent indent) const
{
  Superclass::PrintSelf(os, indent);
}

} // end namespace otb

#endif