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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkIterativeInverseDeformationFieldImageFilterTest.cxx
Language: C++
Date: $Date$
Version: $Revision$
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
#include "itkImage.h"
#include "itkVector.h"
#include "itkIterativeInverseDeformationFieldImageFilter.h"
#include "itkImageRegionIteratorWithIndex.h"
#include "itkImageFileWriter.h"
#include "itkFilterWatcher.h"
int itkIterativeInverseDeformationFieldImageFilterTest( int argc, char * argv[] )
{
if( argc < 2 )
{
std::cerr << "Missing Parameters " << std::endl;
std::cerr << "Usage: " << argv[0];
std::cerr << " outputImage" << 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 itk::IterativeInverseDeformationFieldImageFilter<
DeformationFieldType,
DeformationFieldType
> FilterType;
FilterType::Pointer filter = FilterType::New();
FilterWatcher watcher(filter);
// Creating an input deformation field
DeformationFieldType::Pointer field = DeformationFieldType::New();
DeformationFieldType::SpacingType spacing;
spacing.Fill( 1.0 );
DeformationFieldType::PointType origin;
origin.Fill( 0.0 );
DeformationFieldType::RegionType region;
DeformationFieldType::SizeType size;
DeformationFieldType::IndexType start;
size[0] = 128;
size[1] = 128;
start[0] = 0;
start[1] = 0;
region.SetSize( size );
region.SetIndex( start );
field->SetOrigin( origin );
field->SetSpacing( spacing );
field->SetRegions( region );
field->Allocate();
VectorType pixelValue;
itk::ImageRegionIteratorWithIndex< DeformationFieldType > it( field, region );
// Fill the field with some vectors
it.GoToBegin();
while( !it.IsAtEnd() )
{
DeformationFieldType::IndexType index = it.GetIndex();
pixelValue[0] = index[0] * 2.0;
pixelValue[1] = index[1] * 2.0;
it.Set( pixelValue );
++it;
}
// Use the same geometry for the inverse field.
// This is for simplicity here, in general a
// different geometry should be used.
// filter->SetOutputSpacing( spacing );
// keep the origin
// filter->SetOutputOrigin( origin );
// set the size
// filter->SetSize( size );
filter->SetInput( field );
try
{
filter->UpdateLargestPossibleRegion();
}
catch( itk::ExceptionObject & excp )
{
std::cerr << "Exception thrown " << std::endl;
std::cerr << excp << std::endl;
return EXIT_FAILURE;
}
// Write an image for regression testing
typedef itk::ImageFileWriter< DeformationFieldType > WriterType;
WriterType::Pointer writer = WriterType::New();
writer->SetInput (filter->GetOutput());
writer->SetFileName( argv[1] );
try
{
writer->Update();
}
catch( itk::ExceptionObject & excp )
{
std::cerr << "Exception thrown by writer" << std::endl;
std::cerr << excp << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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