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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#include "itkLandmarkDisplacementFieldSource.h"
#include "itkImageFileWriter.h"
#include "itkFilterWatcher.h"
#include <fstream>
int itkLandmarkDisplacementFieldSourceTest( int argc, char * argv[] )
{
if( argc < 3 )
{
std::cerr << "Missing Parameters " << std::endl;
std::cerr << "Usage: " << argv[0];
std::cerr << " landmarksFile 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 > DisplacementFieldType;
typedef itk::LandmarkDisplacementFieldSource<
DisplacementFieldType
> FilterType;
FilterType::Pointer filter = FilterType::New();
FilterWatcher watcher(filter);
DisplacementFieldType::SpacingType spacing;
spacing.Fill( 1.0 );
DisplacementFieldType::PointType origin;
origin.Fill( 0.0 );
DisplacementFieldType::RegionType region;
DisplacementFieldType::SizeType size;
DisplacementFieldType::IndexType start;
size[0] = 128;
size[1] = 128;
start[0] = 0;
start[1] = 0;
region.SetSize( size );
region.SetIndex( start );
DisplacementFieldType::DirectionType direction;
direction.SetIdentity();
filter->SetOutputSpacing( spacing );
filter->SetOutputOrigin( origin );
filter->SetOutputRegion( region );
filter->SetOutputDirection( direction );
// Create source and target landmarks.
//
typedef FilterType::LandmarkContainer LandmarkContainerType;
typedef FilterType::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++;
std::cout << sourcePoint << " -->> " << targetPoint << std::endl;
pointsFile >> sourcePoint;
pointsFile >> targetPoint;
}
pointsFile.close();
filter->SetSourceLandmarks( sourceLandmarks.GetPointer() );
filter->SetTargetLandmarks( targetLandmarks.GetPointer() );
try
{
filter->UpdateLargestPossibleRegion();
}
catch( itk::ExceptionObject & excp )
{
std::cerr << "Exception thrown " << std::endl;
std::cerr << excp << std::endl;
}
// Write an image for regression testing
typedef itk::ImageFileWriter< DisplacementFieldType > WriterType;
WriterType::Pointer writer = WriterType::New();
writer->SetInput (filter->GetOutput());
writer->SetFileName( argv[2] );
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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