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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: LandmarkWarping2.cxx,v $
Language: C++
Date: $Date: 2009-11-21 21:23:25 $
Version: $Revision: 1.14 $
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.
=========================================================================*/
#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif
// Software Guide : BeginLatex
//
// This example illustrates how to deform an image using a KernelBase spline
// and two sets of landmarks.
//
// \index{WarpImageFilter}
// \index{DeformationFieldSource}
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
#include "itkVector.h"
#include "itkImage.h"
#include "itkImageRegionIteratorWithIndex.h"
#include "itkDeformationFieldSource.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkWarpImageFilter.h"
#include "itkLinearInterpolateImageFunction.h"
// Software Guide : EndCodeSnippet
#include <fstream>
int main( int argc, char * argv[] )
{
if( argc < 3 )
{
std::cerr << "Missing Parameters " << std::endl;
std::cerr << "Usage: " << argv[0];
std::cerr << " landmarksFile fixedImage ";
std::cerr << "movingImage deformedMovingImage" << std::endl;
return EXIT_FAILURE;
}
const unsigned int Dimension = 2;
typedef float VectorComponentType;
typedef itk::Vector< VectorComponentType, Dimension > VectorType;
typedef itk::Image< VectorType, Dimension > DeformationFieldType;
typedef unsigned char PixelType;
typedef itk::Image< PixelType, Dimension > FixedImageType;
typedef itk::Image< PixelType, Dimension > MovingImageType;
typedef itk::ImageFileReader< FixedImageType > FixedReaderType;
typedef itk::ImageFileReader< MovingImageType > MovingReaderType;
typedef itk::ImageFileWriter< MovingImageType > MovingWriterType;
FixedReaderType::Pointer fixedReader = FixedReaderType::New();
fixedReader->SetFileName( argv[2] );
try
{
fixedReader->Update();
}
catch( itk::ExceptionObject & excp )
{
std::cerr << "Exception thrown " << std::endl;
std::cerr << excp << std::endl;
return EXIT_FAILURE;
}
MovingReaderType::Pointer movingReader = MovingReaderType::New();
MovingWriterType::Pointer movingWriter = MovingWriterType::New();
movingReader->SetFileName( argv[3] );
movingWriter->SetFileName( argv[4] );
FixedImageType::ConstPointer fixedImage = fixedReader->GetOutput();
typedef itk::DeformationFieldSource<
DeformationFieldType
> DeformationSourceType;
DeformationSourceType::Pointer deformer = DeformationSourceType::New();
deformer->SetOutputSpacing( fixedImage->GetSpacing() );
deformer->SetOutputOrigin( fixedImage->GetOrigin() );
deformer->SetOutputRegion( fixedImage->GetLargestPossibleRegion() );
deformer->SetOutputDirection( fixedImage->GetDirection() );
// Create source and target landmarks.
//
typedef DeformationSourceType::LandmarkContainerPointer LandmarkContainerPointer;
typedef DeformationSourceType::LandmarkContainer LandmarkContainerType;
typedef DeformationSourceType::LandmarkPointType LandmarkPointType;
LandmarkContainerType::Pointer sourceLandmarks = LandmarkContainerType::New();
LandmarkContainerType::Pointer targetLandmarks = LandmarkContainerType::New();
LandmarkPointType sourcePoint;
LandmarkPointType targetPoint;
std::ifstream pointsFile;
pointsFile.open( argv[1] );
unsigned int pointId = 0;
pointsFile >> sourcePoint;
pointsFile >> targetPoint;
while( !pointsFile.fail() )
{
sourceLandmarks->InsertElement( pointId, sourcePoint );
targetLandmarks->InsertElement( pointId, targetPoint );
pointId++;
pointsFile >> sourcePoint;
pointsFile >> targetPoint;
}
pointsFile.close();
deformer->SetSourceLandmarks( sourceLandmarks.GetPointer() );
deformer->SetTargetLandmarks( targetLandmarks.GetPointer() );
try
{
deformer->UpdateLargestPossibleRegion();
}
catch( itk::ExceptionObject & excp )
{
std::cerr << "Exception thrown " << std::endl;
std::cerr << excp << std::endl;
return EXIT_FAILURE;
}
DeformationFieldType::ConstPointer deformationField = deformer->GetOutput();
typedef itk::WarpImageFilter< MovingImageType,
MovingImageType,
DeformationFieldType > FilterType;
FilterType::Pointer warper = FilterType::New();
typedef itk::LinearInterpolateImageFunction<
MovingImageType, double > InterpolatorType;
InterpolatorType::Pointer interpolator = InterpolatorType::New();
warper->SetInterpolator( interpolator );
warper->SetOutputSpacing( deformationField->GetSpacing() );
warper->SetOutputOrigin( deformationField->GetOrigin() );
warper->SetDeformationField( deformationField );
warper->SetInput( movingReader->GetOutput() );
movingWriter->SetInput( warper->GetOutput() );
try
{
movingWriter->Update();
}
catch( itk::ExceptionObject & excp )
{
std::cerr << "Exception thrown " << std::endl;
std::cerr << excp << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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