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/*=========================================================================
Program: ITK-SNAP
Module: $RCSfile: SignedDistanceFilter.txx,v $
Language: C++
Date: $Date: 2010/06/28 18:45:08 $
Version: $Revision: 1.3 $
Copyright (c) 2007 Paul A. Yushkevich
This file is part of ITK-SNAP
ITK-SNAP is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
-----
Copyright (c) 2003 Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm 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.
=========================================================================*/
template<typename TInputImage,typename TOutputImage>
SignedDistanceFilter<TInputImage,TOutputImage>
::SignedDistanceFilter()
{
// Create the inverter
m_InvertFilter = InvertFilterType::New();
m_InvertFilter->SetInput(this->GetInput());
m_InvertFilter->ReleaseDataFlagOn();
// Create the exterior distance filter
m_OutsideDistanceFilter = DistanceFilterType::New();
m_OutsideDistanceFilter->SetInputIsBinary(true);
m_OutsideDistanceFilter->SetInput(this->GetInput());
m_OutsideDistanceFilter->ReleaseDataFlagOn();
// And the interior filter
m_InsideDistanceFilter = DistanceFilterType::New();
m_InsideDistanceFilter->SetInput(m_InvertFilter->GetOutput());
m_InsideDistanceFilter->SetInputIsBinary(true);
m_InsideDistanceFilter->ReleaseDataFlagOn();
// Filter to subtract the inside from the outside
m_SubtractFilter = SubtractFilterType::New();
m_SubtractFilter->SetInput1(m_OutsideDistanceFilter->GetDistanceMap());
m_SubtractFilter->SetInput2(m_InsideDistanceFilter->GetDistanceMap());
// Create the progress accumulator
m_ProgressAccumulator = itk::ProgressAccumulator::New();
m_ProgressAccumulator->SetMiniPipelineFilter(this);
// Register the filters with the progress accumulator
m_ProgressAccumulator->RegisterInternalFilter(m_InvertFilter,0.05f);
m_ProgressAccumulator->RegisterInternalFilter(m_InsideDistanceFilter,0.45f);
m_ProgressAccumulator->RegisterInternalFilter(m_OutsideDistanceFilter,0.45f);
m_ProgressAccumulator->RegisterInternalFilter(m_SubtractFilter,0.05f);
}
template<typename TInputImage,typename TOutputImage>
void
SignedDistanceFilter<TInputImage,TOutputImage>
::GenerateData()
{
// Get the input and output pointers
const typename InputImageType::ConstPointer inputImage = this->GetInput();
typename OutputImageType::Pointer outputImage = this->GetOutput();
// Initialize the progress counter
m_ProgressAccumulator->ResetProgress();
// Allocate the output image
outputImage->SetBufferedRegion(outputImage->GetRequestedRegion());
outputImage->Allocate();
// Set the inputs
m_InvertFilter->SetInput(inputImage);
m_OutsideDistanceFilter->SetInput(inputImage);
// Call the filter's GenerateData()
m_SubtractFilter->GraftOutput(outputImage);
m_SubtractFilter->Update();
// graft the mini-pipeline output back onto this filter's output.
// this is needed to get the appropriate regions passed back.
GraftOutput( m_SubtractFilter->GetOutput() );
}
template<typename TInputImage,typename TOutputImage>
void
SignedDistanceFilter<TInputImage,TOutputImage>
::PrintSelf(std::ostream& os, itk::Indent indent) const
{
Superclass::PrintSelf(os,indent);
}
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