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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkMaskNeighborhoodOperatorImageFilter.txx,v $
Language: C++
Date: $Date: 2006-01-11 19:43:31 $
Version: $Revision: 1.4 $
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 _itkMaskNeighborhoodOperatorImageFilter_txx
#define _itkMaskNeighborhoodOperatorImageFilter_txx
#include "itkMaskNeighborhoodOperatorImageFilter.h"
#include "itkNeighborhoodAlgorithm.h"
#include "itkImageRegionIterator.h"
#include "itkImageRegionConstIterator.h"
#include "itkConstNeighborhoodIterator.h"
#include "itkProgressReporter.h"
namespace itk
{
template< class TInputImage, class TMaskImage, class TOutputImage, class TOperatorValueType>
void
MaskNeighborhoodOperatorImageFilter<TInputImage, TMaskImage, TOutputImage, TOperatorValueType>
::SetMaskImage( const TMaskImage *mask )
{
this->ProcessObject::SetNthInput( 1, const_cast<TMaskImage *>(mask) );
}
template< class TInputImage, class TMaskImage, class TOutputImage, class TOperatorValueType>
const TMaskImage *
MaskNeighborhoodOperatorImageFilter<TInputImage, TMaskImage, TOutputImage, TOperatorValueType>
::GetMaskImage() const
{
return static_cast<MaskImageType*>(const_cast<DataObject *>(this->ProcessObject::GetInput(1)));
}
template <class TInputImage, class TMaskImage, class TOutputImage, class TOperatorValueType>
void
MaskNeighborhoodOperatorImageFilter<TInputImage, TMaskImage, TOutputImage, TOperatorValueType>
::GenerateInputRequestedRegion() throw (InvalidRequestedRegionError)
{
// call the superclass' implementation of this method
Superclass::GenerateInputRequestedRegion();
// Superclass handled the input image, now we just need to handle
// the mask image is any.
InputImagePointer inputPtr =
const_cast< TInputImage * >( this->GetInput() );
MaskImagePointer maskPtr =
const_cast< TMaskImage * >( this->GetMaskImage() );
if ( !inputPtr || !maskPtr )
{
return;
}
// get a copy of the input requested region which was set up by the
// superclass (NeighborhoodOperatorImageFilter)
typename TInputImage::RegionType inputRequestedRegion;
inputRequestedRegion = inputPtr->GetRequestedRegion();
// set the mask requested region to match the input requested region
if ( maskPtr->GetLargestPossibleRegion().IsInside( inputRequestedRegion ) )
{
maskPtr->SetRequestedRegion( inputRequestedRegion );
}
else
{
// Couldn't make the masked region match the input region.
// Throw an exception.
// store what we tried to request
maskPtr->SetRequestedRegion( inputRequestedRegion );
// build an exception
InvalidRequestedRegionError e(__FILE__, __LINE__);
e.SetLocation(ITK_LOCATION);
e.SetDescription("Requested region is (at least partially) outside the largest possible region of the mask image.");
e.SetDataObject(maskPtr);
throw e;
}
}
template< class TInputImage, class TMaskImage, class TOutputImage, class TOperatorValueType>
void
MaskNeighborhoodOperatorImageFilter<TInputImage, TMaskImage, TOutputImage, TOperatorValueType>
::ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread,
int threadId)
{
// get output/inputs
OutputImageType *output = this->GetOutput();
const InputImageType *input = this->GetInput();
const MaskImageType *mask = this->GetMaskImage();
// If mask is not specified, called the superclass...
if (!mask)
{
Superclass::ThreadedGenerateData(outputRegionForThread, threadId);
return;
}
// Define the inner product algorithm
NeighborhoodInnerProduct<InputImageType, OperatorValueType> smartInnerProduct;
// Break the input into a series of regions. The first region is free
// of boundary conditions, the rest with boundary conditions. Note,
// we pass in the input image and the OUTPUT requested region. We are
// only concerned with centering the neighborhood operator at the
// pixels that correspond to output pixels.
typedef NeighborhoodAlgorithm::ImageBoundaryFacesCalculator<InputImageType>
BFC;
typedef typename BFC::FaceListType FaceListType;
BFC faceCalculator;
FaceListType faceList;
faceList = faceCalculator(input, outputRegionForThread,
this->GetOperator().GetRadius());
// support progress methods/callbacks
ProgressReporter progress(this, threadId,
outputRegionForThread.GetNumberOfPixels());
// Get the operator
OutputNeighborhoodType noperator = this->GetOperator();
// Process non-boundary region and each of the boundary faces.
// These are N-d regions which border the edge of the buffer.
ConstNeighborhoodIterator<InputImageType> bit;
typename FaceListType::iterator fit;
ImageRegionIterator<OutputImageType> it;
ImageRegionConstIterator<MaskImageType> mit;
for (fit=faceList.begin(); fit != faceList.end(); ++fit)
{
bit =
ConstNeighborhoodIterator<InputImageType>(noperator.GetRadius(),
input, *fit);
bit.OverrideBoundaryCondition(this->GetBoundaryCondition());
bit.GoToBegin();
it = ImageRegionIterator<OutputImageType>(output, *fit);
mit = ImageRegionConstIterator<MaskImageType>(mask, *fit);
while ( ! bit.IsAtEnd() )
{
if (mit.Get())
{
// Compute the inner product at this pixel
it.Value() = static_cast<typename OutputImageType::PixelType>(smartInnerProduct(bit, noperator));
}
else
{
// Use the default value or the input value
it.Value() = m_UseDefaultValue ? m_DefaultValue : bit.GetCenterPixel();
}
++bit;
++it;
++mit;
progress.CompletedPixel();
}
}
}
template< class TInputImage, class TMaskImage, class TOutputImage, class TOperatorValueType>
void
MaskNeighborhoodOperatorImageFilter<TInputImage, TMaskImage, TOutputImage, TOperatorValueType>
::PrintSelf(std::ostream& os, Indent indent) const
{
Superclass::PrintSelf(os,indent);
os << indent << "Default value : "
<< static_cast<typename NumericTraits<OutputPixelType>::PrintType>( m_DefaultValue )<< std::endl;
os << indent << "UseDefaultValue : " << m_UseDefaultValue << std::endl;
}
} // end namespace itk
#endif
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