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/*
* Copyright (C) 2005-2022 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 otbLabelizeImageFilterBase_hxx
#define otbLabelizeImageFilterBase_hxx
#include "otbLabelizeImageFilterBase.h"
namespace otb
{
/**
* Constructor
*/
template <class TInputImage, class TOutputImage, class TFilter>
LabelizeImageFilterBase<TInputImage, TOutputImage, TFilter>::LabelizeImageFilterBase()
{
m_LowerThreshold = itk::NumericTraits<InputPixelType>::NonpositiveMin();
m_UpperThreshold = itk::NumericTraits<InputPixelType>::max();
m_MultiplyFilter = MultiplyFilterType::New();
m_MultiplyFilter->SetCoef(0.0);
m_ThresholdPointSetFilter = ThresholdFilterType::New();
m_RegionGrowingFilter = RegionGrowingFilterType::New();
}
/** Generate data
*
*/
template <class TInputImage, class TOutputImage, class TFilter>
void LabelizeImageFilterBase<TInputImage, TOutputImage, TFilter>::GenerateData()
{
// set input for region growing filter
m_RegionGrowingFilter->SetInput(this->GetInput());
// create an empty image to store results computing
m_MultiplyFilter->SetInput(this->GetInput());
m_MultiplyFilter->Update();
// Compute points set
m_ThresholdPointSetFilter->SetInput(0, this->GetInput());
m_ThresholdPointSetFilter->SetLowerThreshold(m_LowerThreshold);
m_ThresholdPointSetFilter->SetUpperThreshold(m_UpperThreshold);
m_ThresholdPointSetFilter->Update();
m_PointSet = m_ThresholdPointSetFilter->GetOutput();
m_ObjectCount = 0;
// Iterate Point set
typedef typename PointSetType::PointsContainer ContainerType;
ContainerType* pointsContainer = m_PointSet->GetPoints();
typedef typename ContainerType::Iterator IteratorType;
IteratorType itList = pointsContainer->Begin();
typename OutputImageType::Pointer outputImage = m_MultiplyFilter->GetOutput();
while (itList != pointsContainer->End())
{
typename PointSetType::PointType pCoordinate = (itList.Value());
typename InputImageType::IndexType index;
index[0] = static_cast<int>(pCoordinate[0]);
index[1] = static_cast<int>(pCoordinate[1]);
if (outputImage->GetPixel(index) == itk::NumericTraits<OutputPixelType>::ZeroValue())
{
this->RegionGrowing(index);
AddImageFilterPointerType addImage = AddImageFilterType::New();
addImage->SetInput1(outputImage);
addImage->SetInput2(m_RegionGrowingFilter->GetOutput());
addImage->Update();
outputImage = addImage->GetOutput();
++m_ObjectCount;
}
++itList;
}
this->GraftOutput(outputImage);
}
/** PrintSelf Method
*
*/
template <class TInputImage, class TOutputImage, class TFilter>
void LabelizeImageFilterBase<TInputImage, TOutputImage, TFilter>::PrintSelf(std::ostream& os, itk::Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "Seeds lower threshold: " << m_LowerThreshold << std::endl;
os << indent << "Seeds upper threshold: " << m_UpperThreshold << std::endl;
os << indent << "ObjectCount: " << m_ObjectCount << std::endl;
os << indent << m_RegionGrowingFilter << std::endl;
}
} // end namespace otb
#endif
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