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/*=========================================================================
Program: Advanced Normalization Tools
Copyright (c) ConsortiumOfANTS. All rights reserved.
See accompanying COPYING.txt or
https://github.com/stnava/ANTs/blob/master/ANTSCopyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef _itkExpTensorImageFilter_hxx
#define _itkExpTensorImageFilter_hxx
#include "itkConstNeighborhoodIterator.h"
#include "itkNeighborhoodInnerProduct.h"
#include "itkImageRegionIterator.h"
#include "itkImageRegionConstIterator.h"
#include "itkOffset.h"
#include "itkProgressReporter.h"
#include "itkObjectFactory.h"
#include "vnl/vnl_matrix.h"
#include "vnl/algo/vnl_symmetric_eigensystem.h"
#include "TensorFunctions.h"
namespace itk
{
template <typename TInputImage, typename TOutputImage>
ExpTensorImageFilter<TInputImage, TOutputImage>::ExpTensorImageFilter() = default;
template <typename TInputImage, typename TOutputImage>
void
ExpTensorImageFilter<TInputImage, TOutputImage>::GenerateData()
{
InputImagePointer input = this->GetInput();
OutputImagePointer output = this->GetOutput();
ImageRegionConstIterator<InputImageType> inputIt(input, input->GetLargestPossibleRegion());
output->SetRegions(input->GetLargestPossibleRegion());
output->AllocateInitialized();
ImageRegionIterator<OutputImageType> outputIt(output, output->GetLargestPossibleRegion());
for (inputIt.GoToBegin(), outputIt.GoToBegin(); !inputIt.IsAtEnd() && !outputIt.IsAtEnd(); ++inputIt, ++outputIt)
{
bool success; // TODO -- actually check the result?
InputPixelType result = TensorLogAndExp<InputPixelType>(inputIt.Value(), false, success);
outputIt.Set(result);
}
}
/**
* Standard "PrintSelf" method
*/
template <typename TInputImage, typename TOutput>
void
ExpTensorImageFilter<TInputImage, TOutput>::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
}
} // end namespace itk
#endif
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