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/*=========================================================================
Program: ORFEO Toolbox
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
See OTBCopyright.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 otbMeanShiftConnectedComponentSegmentationFilter_txx
#define otbMeanShiftConnectedComponentSegmentationFilter_txx
#include "otbMeanShiftConnectedComponentSegmentationFilter.h"
#include "itkExtractImageFilter.h"
namespace otb {
template<class TVImage,class TMaskImage, class TLabelImage>
MeanShiftConnectedComponentSegmentationFilter<TVImage,TMaskImage, TLabelImage>
::MeanShiftConnectedComponentSegmentationFilter()
{
m_MinimumObjectSize=2;
m_MeanShiftFilter= MeanShiftFilterType::New();
}
template<class TVImage,class TMaskImage, class TLabelImage>
MeanShiftConnectedComponentSegmentationFilter<TVImage,TMaskImage, TLabelImage>
::~MeanShiftConnectedComponentSegmentationFilter()
{
}
template<class TVImage,class TMaskImage, class TLabelImage>
void
MeanShiftConnectedComponentSegmentationFilter<TVImage,TMaskImage, TLabelImage>
::GenerateInputRequestedRegion()
{
Superclass::GenerateInputRequestedRegion();
}
template<class TVImage,class TMaskImage, class TLabelImage>
void
MeanShiftConnectedComponentSegmentationFilter<TVImage,TMaskImage, TLabelImage>
::GenerateData()
{
// Apply an ExtractImageFilter to avoid problems with filters asking for the LargestPossibleRegion
typedef itk::ExtractImageFilter<TVImage, TVImage> ExtractImageFilterType;
typename ExtractImageFilterType::Pointer extract = ExtractImageFilterType::New();
extract->SetInput(this->GetInput());
extract->SetExtractionRegion(this->GetOutput()->GetRequestedRegion());
// WARNING: itk::ExtractImageFilter does not copy the MetadataDictionary
// meanshift filtering
//not necessary
/* if (this->m_MeanShiftFilter.IsNotNull())
{
itkExceptionMacro("MeanShiftFilter is null");
}*/
this->m_MeanShiftFilter->SetInput(extract->GetOutput());
//this->m_MeanShiftFilter->SetInput(this->GetInput());
typename MaskImageType::Pointer mask;
if (!m_MaskExpression.empty())
{
// Compute the mask
typename MaskMuParserFilterType::Pointer maskFilter;
maskFilter = MaskMuParserFilterType::New();
maskFilter->SetInput(this->m_MeanShiftFilter->GetOutput());
maskFilter->SetExpression(m_MaskExpression);
maskFilter->Update();
mask = maskFilter->GetOutput();
}
// Perform connected components segmentation
typename ConnectedComponentFilterType::Pointer connected = ConnectedComponentFilterType::New();
connected->SetInput(this->m_MeanShiftFilter->GetOutput());
if (mask.IsNotNull()) connected->SetMaskImage(mask);
connected->GetFunctor().SetExpression(m_ConnectedComponentExpression);
connected->Update();
// Relabel connected component output
typename RelabelComponentFilterType::Pointer relabel = RelabelComponentFilterType::New();
relabel->SetInput(connected->GetOutput());
relabel->SetMinimumObjectSize(m_MinimumObjectSize);
relabel->Update();
this->GraftOutput(relabel->GetOutput());
}
} // end namespace otb
#endif
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