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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 otbStreamingResampleImageFilter_hxx
#define otbStreamingResampleImageFilter_hxx
#include "otbStreamingResampleImageFilter.h"
#include "itkProgressAccumulator.h"
#include "otbImage.h"
namespace otb
{
template <class TInputImage, class TOutputImage, class TInterpolatorPrecisionType>
StreamingResampleImageFilter<TInputImage, TOutputImage, TInterpolatorPrecisionType>::StreamingResampleImageFilter()
{
// internal filters instantiation
m_DisplacementFilter = DisplacementFieldGeneratorType::New();
m_WarpFilter = WarpImageFilterType::New();
m_SignedOutputSpacing = m_DisplacementFilter->GetOutputSpacing();
// Initialize the displacement field spacing to zero : inconsistent
// value
this->SetDisplacementFieldSpacing(itk::NumericTraits<SpacingType>::ZeroValue());
// Wire minipipeline
m_WarpFilter->SetDisplacementField(m_DisplacementFilter->GetOutput());
}
template <class TInputImage, class TOutputImage, class TInterpolatorPrecisionType>
void StreamingResampleImageFilter<TInputImage, TOutputImage, TInterpolatorPrecisionType>::GenerateData()
{
// Set up progress reporting
typename itk::ProgressAccumulator::Pointer progress = itk::ProgressAccumulator::New();
progress->SetMiniPipelineFilter(this);
progress->RegisterInternalFilter(m_WarpFilter, 1.f);
m_WarpFilter->GraftOutput(this->GetOutput());
m_WarpFilter->UpdateOutputData(m_WarpFilter->GetOutput());
this->GraftOutput(m_WarpFilter->GetOutput());
}
/**
*
*/
template <class TInputImage, class TOutputImage, class TInterpolatorPrecisionType>
void StreamingResampleImageFilter<TInputImage, TOutputImage, TInterpolatorPrecisionType>::GenerateOutputInformation()
{
// check the output spacing of the displacement field
if (this->GetDisplacementFieldSpacing() == itk::NumericTraits<SpacingType>::ZeroValue())
{
this->SetDisplacementFieldSpacing(2. * this->GetOutputSpacing());
}
// Retrieve output largest region
SizeType largestSize = this->GetOutputSize();
// Set up displacement field filter
SizeType displacementFieldLargestSize;
for (unsigned int dim = 0; dim < InputImageType::ImageDimension; ++dim)
{
// std::ceil to avoid numerical problems due to division of
// spacings
// + 1 : We need to enlarge the displacement field size cause
// itk::WarpImageFilter::EvaluateDisplacementAtPhysicalPoint needs
// 4 neighbors and in the edges we can need 1 neighbor pixel
// outside the field
displacementFieldLargestSize[dim] =
static_cast<unsigned int>(std::ceil(largestSize[dim] * std::abs(this->GetOutputSpacing()[dim] / this->GetDisplacementFieldSpacing()[dim]))) + 1;
}
m_DisplacementFilter->SetOutputSize(displacementFieldLargestSize);
m_DisplacementFilter->SetOutputIndex(this->GetOutputStartIndex());
m_WarpFilter->SetInput(this->GetInput());
m_WarpFilter->GraftOutput(this->GetOutput());
m_WarpFilter->UpdateOutputInformation();
this->GraftOutput(m_WarpFilter->GetOutput());
}
template <class TInputImage, class TOutputImage, class TInterpolatorPrecisionType>
void StreamingResampleImageFilter<TInputImage, TOutputImage, TInterpolatorPrecisionType>::PropagateRequestedRegion(itk::DataObject* output)
{
if (this->m_Updating)
return;
m_WarpFilter->GetOutput()->SetRequestedRegion(output);
m_WarpFilter->GetOutput()->PropagateRequestedRegion();
}
/**
* Method used to copy the parameters of the input image
*
*/
template <class TInputImage, class TOutputImage, class TInterpolatorPrecisionType>
void StreamingResampleImageFilter<TInputImage, TOutputImage, TInterpolatorPrecisionType>::SetOutputParametersFromImage(const ImageBaseType* image)
{
this->SetOutputOrigin(image->GetOrigin());
this->SetOutputSpacing(internal::GetSignedSpacing(image));
this->SetOutputStartIndex(image->GetLargestPossibleRegion().GetIndex());
this->SetOutputSize(image->GetLargestPossibleRegion().GetSize());
}
template <class TInputImage, class TOutputImage, class TInterpolatorPrecisionType>
void StreamingResampleImageFilter<TInputImage, TOutputImage, TInterpolatorPrecisionType>::SetDisplacementFieldSpacing(SpacingType outputSpacing)
{
m_SignedOutputSpacing = outputSpacing;
typename TInputImage::DirectionType direction = this->m_DisplacementFilter->GetOutputDirection();
for (unsigned int i = 0; i < TInputImage::ImageDimension; ++i)
{
if (outputSpacing[i] < 0)
{
if (direction[i][i] > 0)
{
for (unsigned int j = 0; j < TInputImage::ImageDimension; ++j)
{
direction[j][i] = -direction[j][i];
}
}
outputSpacing[i] = -outputSpacing[i];
}
}
this->m_DisplacementFilter->SetOutputSpacing(outputSpacing);
this->m_DisplacementFilter->SetOutputDirection(direction);
this->Modified();
}
template <class TInputImage, class TOutputImage, class TInterpolatorPrecisionType>
void StreamingResampleImageFilter<TInputImage, TOutputImage, TInterpolatorPrecisionType>::PrintSelf(std::ostream& os, itk::Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "OutputOrigin: " << this->GetOutputOrigin() << std::endl;
os << indent << "OutputSpacing: " << this->GetOutputSpacing() << std::endl;
os << indent << "OutputStartIndex: " << this->GetOutputStartIndex() << std::endl;
os << indent << "OutputSize: " << this->GetOutputSize() << std::endl;
}
}
#endif
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