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rtkElektaSynergyRawLookupTableImageFilter.hxx
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rtkElektaSynergyRawLookupTableImageFilter.hxx
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/*=========================================================================
*
* Copyright RTK Consortium
*
* 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 rtkElektaSynergyRawLookupTableImageFilter_hxx
#define rtkElektaSynergyRawLookupTableImageFilter_hxx
namespace rtk
{
template <class TInputImage, class TOutputImage>
ElektaSynergyRawLookupTableImageFilter<TInputImage, TOutputImage>::ElektaSynergyRawLookupTableImageFilter()
{
// Create the lut
typename LookupTableType::Pointer lut = LookupTableType::New();
typename LookupTableType::SizeType size;
size[0] = itk::NumericTraits<InputImagePixelType>::max() - itk::NumericTraits<InputImagePixelType>::min() + 1;
lut->SetRegions(size);
lut->Allocate();
// Iterate and set lut
itk::ImageRegionIteratorWithIndex<LookupTableType> it(lut, lut->GetBufferedRegion());
it.GoToBegin();
// First value takes value of pixel #1
it.Set(OutputImagePixelType(size[0] - 1));
++it;
// Conventional lookup table for the rest
while (!it.IsAtEnd())
{
it.Set(OutputImagePixelType(size[0] - it.GetIndex()[0]));
++it;
}
// Last value takes value of pixel #1
--it;
it.Set(OutputImagePixelType(size[0] - 1));
// Set the lut to member and functor
this->SetLookupTable(lut);
}
} // namespace rtk
#endif