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/*
* Copyright (C) 1999-2011 Insight Software Consortium
* 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 otbConvertPixelBuffer_hxx
#define otbConvertPixelBuffer_hxx
#include "otbConvertPixelBuffer.h"
#include "itkConvertPixelBuffer.h"
namespace otb
{
template <typename InputPixelType, typename OutputPixelType, class OutputConvertTraits>
void ConvertPixelBuffer<InputPixelType, OutputPixelType, OutputConvertTraits>::Convert(InputPixelType* inputData, int inputNumberOfComponents,
OutputPixelType* outputData, size_t size)
{
if ((OutputConvertTraits::GetNumberOfComponents() == 2) && inputNumberOfComponents == 1)
{
// OTB patch : monoband to complex
ConvertGrayToComplex(inputData, outputData, size);
}
else
{
// use ITK pixel buffer converter
itk::ConvertPixelBuffer<InputPixelType, OutputPixelType, OutputConvertTraits>::Convert(inputData, inputNumberOfComponents, outputData, size);
}
}
// Convert Grayscale to Complex
template <typename InputPixelType, typename OutputPixelType, class OutputConvertTraits>
void ConvertPixelBuffer<InputPixelType, OutputPixelType, OutputConvertTraits>::ConvertGrayToComplex(InputPixelType* inputData, OutputPixelType* outputData,
size_t size)
{
InputPixelType* endInput = inputData + size;
while (inputData != endInput)
{
OutputConvertTraits::SetNthComponent(0, *outputData, static_cast<OutputComponentType>(*inputData));
OutputConvertTraits::SetNthComponent(1, *outputData, static_cast<OutputComponentType>(0.));
inputData++;
outputData++;
}
}
/* To be able to convert transparently*/
template <typename InputType, typename OutputType>
OutputType ComplexCast(const std::complex<InputType>& in, const OutputType& itkNotUsed(dummy))
{
typedef typename itk::NumericTraits<std::complex<InputType>>::RealType RealType;
typedef typename itk::NumericTraits<std::complex<InputType>>::ScalarRealType ScalarRealType;
RealType inReal(static_cast<ScalarRealType>(in.real()), static_cast<ScalarRealType>(in.imag()));
return static_cast<OutputType>(std::abs(inReal));
}
template <typename InputType, typename OutputType>
std::complex<OutputType> ComplexCast(const std::complex<InputType>& in, const std::complex<OutputType>& itkNotUsed(dummy))
{
typedef typename itk::NumericTraits<std::complex<InputType>>::RealType RealType;
typedef typename itk::NumericTraits<std::complex<InputType>>::ScalarRealType ScalarRealType;
RealType inReal(static_cast<ScalarRealType>(in.real()), static_cast<ScalarRealType>(in.imag()));
return static_cast<std::complex<OutputType>>(inReal);
}
template <typename InputPixelType, typename OutputPixelType, class OutputConvertTraits>
void ConvertPixelBuffer<InputPixelType, OutputPixelType, OutputConvertTraits>::ConvertComplexToGray(std::complex<InputPixelType>* inputData,
int itkNotUsed(inputNumberOfComponents),
OutputPixelType* outputData, size_t size)
{
OutputPixelType dummy;
std::complex<InputPixelType>* endInput = inputData + size;
while (inputData != endInput)
{
OutputConvertTraits::SetNthComponent(0, *outputData, static_cast<OutputPixelType>(ComplexCast(*inputData, dummy)));
inputData++;
outputData++;
}
}
template <typename InputPixelType, typename OutputPixelType, class OutputConvertTraits>
void ConvertPixelBuffer<InputPixelType, OutputPixelType, OutputConvertTraits>::ConvertVectorImage(InputPixelType* inputData, int inputNumberOfComponents,
OutputPixelType* outputData, size_t size)
{
itk::ConvertPixelBuffer<InputPixelType, OutputPixelType, OutputConvertTraits>::ConvertVectorImage(inputData, inputNumberOfComponents, outputData, size);
}
template <typename InputPixelType, typename OutputPixelType, class OutputConvertTraits>
void ConvertPixelBuffer<InputPixelType, OutputPixelType, OutputConvertTraits>::ConvertComplexVectorImageToVectorImage(std::complex<InputPixelType>* inputData,
int inputNumberOfComponents,
OutputPixelType* outputData, size_t size)
{
size_t length = size * (size_t)inputNumberOfComponents;
for (size_t i = 0; i < length / 2; i++)
{
OutputConvertTraits::SetNthComponent(0, *outputData, (*inputData).real());
++outputData;
OutputConvertTraits::SetNthComponent(0, *outputData, (*inputData).imag());
++outputData;
++inputData;
}
}
template <typename InputPixelType, typename OutputPixelType, class OutputConvertTraits>
void ConvertPixelBuffer<InputPixelType, OutputPixelType, OutputConvertTraits>::ConvertComplexVectorImageToVectorImageComplex(
std::complex<InputPixelType>* inputData, int inputNumberOfComponents, OutputPixelType* outputData, size_t size)
{
size_t length = size * (size_t)inputNumberOfComponents;
OutputPixelType dummy;
for (size_t i = 0; i < length; i++)
{
OutputConvertTraits::SetNthComponent(0, *outputData, ComplexCast(*inputData, dummy));
++outputData;
++inputData;
}
}
} // end namespace otb
#endif
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