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itkBlockMatchingImageToImageMetricMetricImageFilter.hxx
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itkBlockMatchingImageToImageMetricMetricImageFilter.hxx
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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 itkBlockMatchingImageToImageMetricMetricImageFilter_hxx
#define itkBlockMatchingImageToImageMetricMetricImageFilter_hxx
namespace itk
{
namespace BlockMatching
{
template <typename TFixedImage, typename TMovingImage, typename TMetricImage>
ImageToImageMetricMetricImageFilter<TFixedImage, TMovingImage, TMetricImage>::ImageToImageMetricMetricImageFilter()
: m_MetricImageSpacingDefined(false)
{}
template <typename TFixedImage, typename TMovingImage, typename TMetricImage>
void
ImageToImageMetricMetricImageFilter<TFixedImage, TMovingImage, TMetricImage>::SetMetricImageSpacing(
const MetricImageSpacingType & spacing)
{
m_MetricImageSpacing = spacing;
m_MetricImageSpacingDefined = true;
this->Modified();
}
template <typename TFixedImage, typename TMovingImage, typename TMetricImage>
void
ImageToImageMetricMetricImageFilter<TFixedImage, TMovingImage, TMetricImage>::GenerateOutputInformation()
{
// get origin and direction from fixed image.
Superclass::Superclass::GenerateOutputInformation();
const MovingImageType * moving = this->GetInput(1);
if (!moving)
{
itkExceptionMacro(<< "MovingImage input has not been set");
}
MetricImageType * output = this->GetOutput(0);
if (!output)
{
return;
}
if (!this->m_MovingImageRegionDefined)
{
itkExceptionMacro(<< "MovingImageRegion has not been set");
}
typename MovingImageType::SpacingType movingSpacing = moving->GetSpacing();
MetricImageRegionType metricRegion;
typename MetricImageRegionType::IndexType metricIndex;
metricIndex.Fill(0);
metricRegion.SetIndex(metricIndex);
typename MetricImageRegionType::SizeType metricSize;
typename MovingImageRegionType::SizeType movingSize = this->m_MovingImageRegion.GetSize();
if (m_MetricImageSpacingDefined)
{
for (unsigned int i = 0; i < ImageDimension; ++i)
{
metricSize[i] = std::ceil(movingSize[i] * movingSpacing[i] / m_MetricImageSpacing[i]);
}
output->SetSpacing(m_MetricImageSpacing);
}
else
{
metricSize = movingSize;
output->SetSpacing(movingSpacing);
}
metricRegion.SetSize(metricSize);
output->SetLargestPossibleRegion(metricRegion);
}
} // end namespace BlockMatching
} // end namespace itk
#endif