/
itkConnectedRegionEdgeThresholdImageFilter.txx
executable file
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itkConnectedRegionEdgeThresholdImageFilter.txx
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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkConnectedThresholdImageFilter.txx,v $
Language: C++
Date: $Date: 2009-04-21 12:29:36 $
Version: $Revision: 1.30 $
Copyright (c) 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.
=========================================================================*/
#ifndef __itkConnectedRegionEdgeThresholdImageFilter_txx
#define __itkConnectedRegionEdgeThresholdImageFilter_txx
#include "itkConnectedRegionEdgeThresholdImageFilter.h"
#include "itkRegionEdgeFunction.h"
#include "itkFloodFilledImageFunctionConditionalIterator.h"
#include "itkProgressReporter.h"
#ifdef ITK_USE_REVIEW
#include "itkShapedFloodFilledImageFunctionConditionalIterator.h"
#endif
namespace itk
{
/**
* Constructor
*/
template <class TInputImage, class TOutputImage>
ConnectedRegionEdgeThresholdImageFilter<TInputImage, TOutputImage>
::ConnectedRegionEdgeThresholdImageFilter()
{
m_Lower = NumericTraits<InputImagePixelType>::NonpositiveMin();
m_Upper = NumericTraits<InputImagePixelType>::max();
m_ReplaceValue = NumericTraits<OutputImagePixelType>::One;
this->m_Connectivity = FaceConnectivity;
typename InputPixelObjectType::Pointer lower = InputPixelObjectType::New();
lower->Set( NumericTraits< InputImagePixelType >::NonpositiveMin() );
this->ProcessObject::SetNthInput( 1, lower );
typename InputPixelObjectType::Pointer upper = InputPixelObjectType::New();
upper->Set( NumericTraits< InputImagePixelType >::max() );
this->ProcessObject::SetNthInput( 2, upper );
}
template <class TInputImage, class TOutputImage>
void
ConnectedRegionEdgeThresholdImageFilter<TInputImage, TOutputImage>
::SetSeed ( const IndexType & seed )
{
this->ClearSeeds();
this->AddSeed ( seed );
}
template <class TInputImage, class TOutputImage>
void
ConnectedRegionEdgeThresholdImageFilter<TInputImage, TOutputImage>
::AddSeed(const IndexType & seed)
{
this->m_SeedList.push_back ( seed );
this->Modified();
}
template <class TInputImage, class TOutputImage>
void
ConnectedRegionEdgeThresholdImageFilter<TInputImage, TOutputImage>
::ClearSeeds ()
{
if( m_SeedList.size() > 0 )
{
this->m_SeedList.clear();
this->Modified();
}
}
/**
* Standard PrintSelf method.
*/
template <class TInputImage, class TOutputImage>
void
ConnectedRegionEdgeThresholdImageFilter<TInputImage, TOutputImage>
::PrintSelf(std::ostream& os, Indent indent) const
{
this->Superclass::PrintSelf(os, indent);
os << indent << "Upper: "
<< static_cast<typename NumericTraits<OutputImagePixelType>::PrintType>(m_Upper)
<< std::endl;
os << indent << "Lower: "
<< static_cast<typename NumericTraits<OutputImagePixelType>::PrintType>(m_Lower)
<< std::endl;
os << indent << "ReplaceValue: "
<< static_cast<typename NumericTraits<OutputImagePixelType>::PrintType>(m_ReplaceValue)
<< std::endl;
os << indent << "Connectivity: " << m_Connectivity << std::endl;
}
template <class TInputImage, class TOutputImage>
void
ConnectedRegionEdgeThresholdImageFilter<TInputImage,TOutputImage>
::GenerateInputRequestedRegion()
{
Superclass::GenerateInputRequestedRegion();
if ( this->GetInput() )
{
InputImagePointer image =
const_cast< InputImageType * >( this->GetInput() );
image->SetRequestedRegionToLargestPossibleRegion();
}
}
template <class TInputImage, class TOutputImage>
void
ConnectedRegionEdgeThresholdImageFilter<TInputImage,TOutputImage>
::EnlargeOutputRequestedRegion(DataObject *output)
{
Superclass::EnlargeOutputRequestedRegion(output);
output->SetRequestedRegionToLargestPossibleRegion();
}
template <class TInputImage, class TOutputImage>
void
ConnectedRegionEdgeThresholdImageFilter<TInputImage,TOutputImage>
::SetLowerInput( const InputPixelObjectType * input )
{
if (input != this->GetLowerInput())
{
this->ProcessObject::SetNthInput(1,
const_cast<InputPixelObjectType*>(input));
this->Modified();
}
}
template <class TInputImage, class TOutputImage>
void
ConnectedRegionEdgeThresholdImageFilter<TInputImage,TOutputImage>
::SetUpperInput( const InputPixelObjectType * input )
{
if (input != this->GetUpperInput())
{
this->ProcessObject::SetNthInput(2,
const_cast<InputPixelObjectType*>(input));
this->Modified();
}
}
template <class TInputImage, class TOutputImage>
void
ConnectedRegionEdgeThresholdImageFilter<TInputImage, TOutputImage>
::SetUpper(const InputImagePixelType threshold)
{
// first check to see if anything changed
typename InputPixelObjectType::Pointer upper=this->GetUpperInput();
if (upper && upper->Get() == threshold)
{
return;
}
// create a data object to use as the input and to store this
// threshold. we always create a new data object to use as the input
// since we do not want to change the value in any current input
// (the current input could be the output of another filter or the
// current input could be used as an input to several filters)
upper = InputPixelObjectType::New();
this->ProcessObject::SetNthInput(2, upper);
upper->Set(threshold);
this->Modified();
}
template <class TInputImage, class TOutputImage>
void
ConnectedRegionEdgeThresholdImageFilter<TInputImage, TOutputImage>
::SetLower(const InputImagePixelType threshold)
{
// first check to see if anything changed
typename InputPixelObjectType::Pointer lower=this->GetLowerInput();
if (lower && lower->Get() == threshold)
{
return;
}
// create a data object to use as the input and to store this
// threshold. we always create a new data object to use as the input
// since we do not want to change the value in any current input
// (the current input could be the output of another filter or the
// current input could be used as an input to several filters)
lower = InputPixelObjectType::New();
this->ProcessObject::SetNthInput(1, lower);
lower->Set(threshold);
this->Modified();
}
template <class TInputImage, class TOutputImage>
typename ConnectedRegionEdgeThresholdImageFilter<TInputImage, TOutputImage>::InputPixelObjectType *
ConnectedRegionEdgeThresholdImageFilter<TInputImage,TOutputImage>
::GetLowerInput()
{
typename InputPixelObjectType::Pointer lower
= static_cast<InputPixelObjectType *>(this->ProcessObject::GetInput(1));
if (!lower)
{
// no input object available, create a new one and set it to the
// default threshold
lower = InputPixelObjectType::New();
lower->Set( NumericTraits<InputImagePixelType>::NonpositiveMin() );
this->ProcessObject::SetNthInput( 1, lower );
}
return lower;
}
template <class TInputImage, class TOutputImage>
typename ConnectedRegionEdgeThresholdImageFilter<TInputImage, TOutputImage>::InputPixelObjectType *
ConnectedRegionEdgeThresholdImageFilter<TInputImage,TOutputImage>
::GetUpperInput()
{
typename InputPixelObjectType::Pointer upper
= static_cast<InputPixelObjectType *>(this->ProcessObject::GetInput(2));
if (!upper)
{
// no input object available, create a new one and set it to the
// default threshold
upper = InputPixelObjectType::New();
upper->Set( NumericTraits<InputImagePixelType>::NonpositiveMin() );
this->ProcessObject::SetNthInput( 2, upper );
}
return upper;
}
template <class TInputImage, class TOutputImage>
typename ConnectedRegionEdgeThresholdImageFilter<TInputImage, TOutputImage>::InputImagePixelType
ConnectedRegionEdgeThresholdImageFilter<TInputImage, TOutputImage>
::GetLower() const
{
typename InputPixelObjectType::Pointer lower
= const_cast<Self*>(this)->GetLowerInput();
return lower->Get();
}
template <class TInputImage, class TOutputImage>
typename ConnectedRegionEdgeThresholdImageFilter<TInputImage, TOutputImage>::InputImagePixelType
ConnectedRegionEdgeThresholdImageFilter<TInputImage, TOutputImage>
::GetUpper() const
{
typename InputPixelObjectType::Pointer upper
= const_cast<Self*>(this)->GetUpperInput();
return upper->Get();
}
template <class TInputImage, class TOutputImage>
void
ConnectedRegionEdgeThresholdImageFilter<TInputImage,TOutputImage>
::GenerateData()
{
InputImageConstPointer inputImage = this->GetInput();
OutputImagePointer outputImage = this->GetOutput();
typename InputPixelObjectType::Pointer lowerThreshold=this->GetLowerInput();
typename InputPixelObjectType::Pointer upperThreshold=this->GetUpperInput();
m_Lower = lowerThreshold->Get();
m_Upper = upperThreshold->Get();
// Zero the output
OutputImageRegionType region = outputImage->GetRequestedRegion();
outputImage->SetBufferedRegion( region );
outputImage->Allocate();
outputImage->FillBuffer ( NumericTraits<OutputImagePixelType>::Zero );
typedef RegionEdgeFunction<InputImageType, OutputImageType, double> FunctionType;
typename FunctionType::Pointer function = FunctionType::New();
function->SetInputImage ( inputImage );
function->ThresholdBetween ( m_Lower, m_Upper );
function->SetOutputImagePointer(outputImage);
ProgressReporter progress(this, 0, region.GetNumberOfPixels());
//set the seed pixel to be in the region
outputImage->SetPixel(m_SeedList[0], m_ReplaceValue);
if (this->m_Connectivity == FaceConnectivity)
{
typedef FloodFilledImageFunctionConditionalIterator<OutputImageType, FunctionType> IteratorType;
IteratorType it ( outputImage, function, m_SeedList );
it.GoToBegin();
while( !it.IsAtEnd())
{
it.Set(m_ReplaceValue);
++it;
progress.CompletedPixel(); // potential exception thrown here
}
}
#ifdef ITK_USE_REVIEW
else if (this->m_Connectivity == FullConnectivity)
{
// use the fully connected iterator here. The fully connected iterator
// below is a superset of the above. However, it is reported to be 20%
// slower. Hence we use this "if" block to use the old iterator when
// we don't need full connectivity.
typedef ShapedFloodFilledImageFunctionConditionalIterator<OutputImageType, FunctionType> IteratorType;
IteratorType it ( outputImage, function, m_SeedList );
it.FullyConnectedOn();
it.GoToBegin();
while( !it.IsAtEnd())
{
it.Set(m_ReplaceValue);
++it;
progress.CompletedPixel(); // potential exception thrown here
}
}
#endif
}
} // end namespace itk
#endif