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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkJoinSeriesImageFilter.txx,v $
Language: C++
Date: $Date: 2008-02-13 15:59:36 $
Version: $Revision: 1.6 $
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 _itkJoinSeriesImageFilter_txx
#define _itkJoinSeriesImageFilter_txx
#include "itkJoinSeriesImageFilter.h"
#include "itkProgressReporter.h"
#include "itkImageRegionConstIterator.h"
#include "itkImageRegionIterator.h"
namespace itk
{
template <class TInputImage, class TOutputImage>
JoinSeriesImageFilter<TInputImage,TOutputImage>
::JoinSeriesImageFilter()
{
m_Spacing = 1.0;
m_Origin = 0.0;
}
template <class TInputImage, class TOutputImage>
void
JoinSeriesImageFilter<TInputImage,TOutputImage>
::PrintSelf(std::ostream& os, Indent indent) const
{
Superclass::PrintSelf(os,indent);
os << indent << "Spacing: " << m_Spacing << std::endl;
os << indent << "Origin: " << m_Origin << std::endl;
}
/**
* \sa UnaryFunctorImageFilter::GenerateOutputInformation()
*/
template <class TInputImage, class TOutputImage>
void
JoinSeriesImageFilter<TInputImage,TOutputImage>
::GenerateOutputInformation()
{
// do not call the superclass' implementation of this method since
// this filter allows the input the output to be of different dimensions
// get pointers to the input and output
typename Superclass::OutputImagePointer outputPtr = this->GetOutput();
typename Superclass::InputImageConstPointer inputPtr = this->GetInput();
if ( !outputPtr || !inputPtr)
{
return;
}
// Set the output image largest possible region. Use a RegionCopier
// so that the input and output images can be different dimensions.
OutputImageRegionType outputLargestPossibleRegion;
this->CallCopyInputRegionToOutputRegion(outputLargestPossibleRegion,
inputPtr->GetLargestPossibleRegion());
// for the new dimension, assuming the index has been set 0.
outputLargestPossibleRegion.SetSize(InputImageDimension,
this->GetNumberOfInputs());
outputPtr->SetLargestPossibleRegion( outputLargestPossibleRegion );
// Set the output spacing and origin
const ImageBase<InputImageDimension> *phyData;
phyData
= dynamic_cast<const ImageBase<InputImageDimension>*>(this->GetInput());
if (phyData)
{
// Copy what we can from the image from spacing and origin of the input
// This logic needs to be augmented with logic that select which
// dimensions to copy
unsigned int ii;
const typename InputImageType::SpacingType&
inputSpacing = inputPtr->GetSpacing();
const typename InputImageType::PointType&
inputOrigin = inputPtr->GetOrigin();
typename OutputImageType::SpacingType outputSpacing;
typename OutputImageType::PointType outputOrigin;
// copy the input to the output and fill the rest of the
// output with zeros.
for (ii=0; ii < InputImageDimension; ++ii)
{
outputSpacing[ii] = inputSpacing[ii];
outputOrigin[ii] = inputOrigin[ii];
}
for (; ii < OutputImageDimension; ++ii)
{
outputSpacing[ii] = 1.0;
outputOrigin[ii] = 0.0;
}
// for the new dimension
outputSpacing[InputImageDimension] = this->GetSpacing();
outputOrigin[InputImageDimension] = this->GetOrigin();
// set the spacing and origin
outputPtr->SetSpacing( outputSpacing );
outputPtr->SetOrigin( outputOrigin );
//
// Copy the direction cosines from the input to the output.
// On join, the output dim is always >= input dim
typedef typename InputImageType::DirectionType InputDirectionType;
typedef typename OutputImageType::DirectionType OutputDirectionType;
InputDirectionType inputDir = inputPtr->GetDirection();
unsigned int inputdim = InputImageType::GetImageDimension();
unsigned int outputdim = OutputImageType::GetImageDimension();
OutputDirectionType outputDir = outputPtr->GetDirection();
for(unsigned int i = 0; i < outputdim; i++)
{
for(unsigned int j = 0; j < outputdim; j++)
{
if(j < inputdim && i < inputdim)
{
outputDir[i][j] = inputDir[i][j];
}
else
{
outputDir[i][j] = i == j ? 1.0 : 0.0;
}
}
}
outputPtr->SetDirection(outputDir);
}
else
{
// pointer could not be cast back down
itkExceptionMacro(<< "itk::JoinSeriesImageFilter::GenerateOutputInformation "
<< "cannot cast input to "
<< typeid(ImageBase<InputImageDimension>*).name() );
}
}
template <class TInputImage, class TOutputImage>
void
JoinSeriesImageFilter<TInputImage,TOutputImage>
::GenerateInputRequestedRegion()
{
Superclass::GenerateInputRequestedRegion();
if (!this->GetOutput())
{
return;
}
OutputImageRegionType outputRegion = this->GetOutput()->GetRequestedRegion();
IndexValueType begin = outputRegion.GetIndex(InputImageDimension);
IndexValueType end = begin + outputRegion.GetSize(InputImageDimension);
for (IndexValueType idx = 0; idx < this->GetNumberOfInputs(); ++idx)
{
InputImagePointer inputPtr =
const_cast<InputImageType *>(this->GetInput(idx));
if ( !inputPtr )
{
// Because DataObject::PropagateRequestedRegion() allows only
// InvalidRequestedRegionError, it's impossible to write simply:
// itkExceptionMacro(<< "Missing input " << idx);
InvalidRequestedRegionError e(__FILE__, __LINE__);
e.SetLocation(ITK_LOCATION);
e.SetDescription("Missing input.");
e.SetDataObject(this->GetOutput());
throw e;
}
InputImageRegionType inputRegion;
if ( begin <= idx && idx < end )
{
this->CallCopyOutputRegionToInputRegion(inputRegion, outputRegion);
}
else
{
// to tell the pipeline that updating this input is unncesseary
inputRegion = inputPtr->GetBufferedRegion();
}
inputPtr->SetRequestedRegion(inputRegion);
}
}
template <class TInputImage, class TOutputImage>
void
JoinSeriesImageFilter<TInputImage,TOutputImage>
::ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread,
int threadId)
{
itkDebugMacro(<<"Actually executing");
ProgressReporter progress(this, threadId, outputRegionForThread.GetNumberOfPixels());
OutputImageRegionType outputRegion = outputRegionForThread;
outputRegion.SetSize(InputImageDimension, 1);
InputImageRegionType inputRegion;
this->CallCopyOutputRegionToInputRegion(inputRegion, outputRegionForThread);
IndexValueType begin = outputRegionForThread.GetIndex(InputImageDimension);
IndexValueType end =
begin + outputRegionForThread.GetSize(InputImageDimension);
for (IndexValueType idx = begin; idx < end; ++idx)
{
outputRegion.SetIndex(InputImageDimension, idx);
ImageRegionIterator<OutputImageType>
outIt(this->GetOutput(), outputRegion);
ImageRegionConstIterator<InputImageType>
inIt(this->GetInput(idx), inputRegion);
outIt.GoToBegin();
inIt.GoToBegin();
while( !outIt.IsAtEnd() )
{
outIt.Set( inIt.Get() );
++outIt;
++inIt;
progress.CompletedPixel();
}
}
}
} // end namespace itk
#endif
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