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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* 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 itkFullToHalfHermitianImageFilter_hxx
#define itkFullToHalfHermitianImageFilter_hxx
#include "itkImageAlgorithm.h"
#include "itkProgressReporter.h"
namespace itk
{
template <typename TInputImage>
FullToHalfHermitianImageFilter<TInputImage>::FullToHalfHermitianImageFilter()
{
this->SetActualXDimensionIsOdd(false);
this->DynamicMultiThreadingOn();
}
template <typename TInputImage>
void
FullToHalfHermitianImageFilter<TInputImage>::GenerateOutputInformation()
{
// Call the superclass' implementation of this method
Superclass::GenerateOutputInformation();
// Get pointers to the input and output
typename InputImageType::ConstPointer inputPtr = this->GetInput();
typename OutputImageType::Pointer outputPtr = this->GetOutput();
if (!inputPtr || !outputPtr)
{
return;
}
const typename InputImageType::SizeType & inputSize = inputPtr->GetLargestPossibleRegion().GetSize();
const typename InputImageType::IndexType & inputStartIndex = inputPtr->GetLargestPossibleRegion().GetIndex();
typename OutputImageType::SizeType outputSize;
typename OutputImageType::IndexType outputStartIndex;
for (unsigned int i = 0; i < OutputImageType::ImageDimension; ++i)
{
outputSize[i] = inputSize[i];
outputStartIndex[i] = inputStartIndex[i];
}
outputSize[0] = (inputSize[0] / 2) + 1;
const typename OutputImageType::RegionType outputLargestPossibleRegion(outputStartIndex, outputSize);
outputPtr->SetLargestPossibleRegion(outputLargestPossibleRegion);
this->SetActualXDimensionIsOdd(inputSize[0] % 2 != 0);
}
template <typename TInputImage>
void
FullToHalfHermitianImageFilter<TInputImage>::GenerateInputRequestedRegion()
{
Superclass::GenerateInputRequestedRegion();
// Get pointers to the input and output
typename InputImageType::Pointer inputPtr = const_cast<InputImageType *>(this->GetInput());
if (inputPtr)
{
inputPtr->SetRequestedRegionToLargestPossibleRegion();
}
}
template <typename TInputImage>
void
FullToHalfHermitianImageFilter<TInputImage>::DynamicThreadedGenerateData(
const OutputImageRegionType & outputRegionForThread)
{
typename InputImageType::ConstPointer inputPtr = this->GetInput();
typename OutputImageType::Pointer outputPtr = this->GetOutput();
if (!inputPtr || !outputPtr)
{
return;
}
// Copy the non-reflected region.
ImageAlgorithm::Copy(inputPtr.GetPointer(), outputPtr.GetPointer(), outputRegionForThread, outputRegionForThread);
}
} // end namespace itk
#endif // itkFullToHalfHermitianImageFilter_hxx
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