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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkImageToParametricSpaceFilter.txx,v $
Language: C++
Date: $Date: 2005-06-04 19:33:30 $
Version: $Revision: 1.15 $
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 _itkImageToParametricSpaceFilter_txx
#define _itkImageToParametricSpaceFilter_txx
#include "itkImageToParametricSpaceFilter.h"
#include "itkNumericTraits.h"
#include "itkImageIterator.h"
#include "itkProgressReporter.h"
namespace itk
{
/**
*
*/
template <class TInputImage, class TOutputMesh>
ImageToParametricSpaceFilter<TInputImage,TOutputMesh>
::ImageToParametricSpaceFilter()
{
// Modify superclass default values, can be overridden by subclasses
this->SetNumberOfRequiredInputs(PointDimension);
m_ComputeIndices = true;
}
/**
*
*/
template <class TInputImage, class TOutputMesh>
ImageToParametricSpaceFilter<TInputImage,TOutputMesh>
::~ImageToParametricSpaceFilter()
{
}
/**
*
*/
template <class TInputImage, class TOutputMesh>
void
ImageToParametricSpaceFilter<TInputImage,TOutputMesh>
::PrintSelf(std::ostream& os, Indent indent) const
{
Superclass::PrintSelf(os,indent);
os << indent << "ComputeIndices: " << m_ComputeIndices << std::endl;
}
/**
*
*/
template <class TInputImage, class TOutputMesh>
void
ImageToParametricSpaceFilter<TInputImage,TOutputMesh>
::GenerateOutputInformation()
{
OutputMeshPointer mesh = this->GetOutput();
PointsContainerPointer points = mesh->GetPoints();
PointDataContainerPointer pointData;
if( mesh->GetPointData() )
{
pointData = mesh->GetPointData();
}
else
{ // Create
pointData = PointDataContainer::New();
}
InputImageConstPointer image = this->GetInput(0);
const unsigned long numberOfPixels =
image->GetRequestedRegion().GetNumberOfPixels();
points->Reserve( numberOfPixels );
pointData->Reserve( numberOfPixels );
mesh->SetPointData( pointData.GetPointer() );
}
/**
*
*/
template <class TInputImage, class TOutputMesh>
void
ImageToParametricSpaceFilter<TInputImage,TOutputMesh>
::GenerateData(void)
{
OutputMeshPointer mesh = this->GetOutput();
PointsContainerPointer points = mesh->GetPoints();
PointDataContainerPointer pointData = PointDataContainer::New();
InputImageConstPointer image = this->GetInput(0);
InputImageRegionType region = image->GetRequestedRegion();
unsigned long numberOfPixels = region.GetNumberOfPixels();
points->Reserve( numberOfPixels );
pointData->Reserve( numberOfPixels );
mesh->SetPointData( pointData.GetPointer() );
mesh->SetBufferedRegion( mesh->GetRequestedRegion() );
// support progress methods/callbacks
ProgressReporter progress(this, 0, numberOfPixels);
for( unsigned int component=0; component<PointDimension; component++)
{
image = this->GetInput( component );
InputImageIterator it( image, image->GetRequestedRegion() );
PointsContainerIterator point = points->Begin();
it.GoToBegin();
while( !it.IsAtEnd() )
{
(point.Value())[ component ] = it.Get();
it.GetIndex();
++it;
++point;
progress.CompletedPixel();
}
}
if( m_ComputeIndices )
{
PointDataContainerIterator data = pointData->Begin();
image = this->GetInput( 0 );
InputImageIterator it( image, image->GetRequestedRegion() );
it.GoToBegin();
while( !it.IsAtEnd() )
{
// The data at each point is the index
// of the corresponding pixel on the image.
typedef typename OutputMeshType::PixelType MeshPixelType;
MeshPixelType point;
image->TransformIndexToPhysicalPoint( it.GetIndex(), point );
(data.Value()) = point;
++it;
++data;
}
}
}
} // end namespace itk
#endif
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