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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 "itkImageFileReader.h"
#include "itkLevelSetContainer.h"
#include "itkLevelSetEquationChanAndVeseExternalTerm.h"
#include "itkLevelSetEquationTermContainer.h"
#include "itkLevelSetEquationContainer.h"
#include "itkSinRegularizedHeavisideStepFunction.h"
#include "itkLevelSetEvolution.h"
#include "itkBinaryImageToLevelSetImageAdaptor.h"
#include "itkLevelSetEquationCurvatureTerm.h"
#include "itkLevelSetEquationPropagationTerm.h"
#include "itkLevelSetEquationLaplacianTerm.h"
#include "itkLevelSetEvolutionNumberOfIterationsStoppingCriterion.h"
int itkSingleLevelSetWhitakerImage2DWithLaplacianTest( int argc, char* argv[] )
{
if( argc < 2 )
{
std::cerr << "Missing Arguments" << std::endl;
return EXIT_FAILURE;
}
const unsigned int Dimension = 2;
typedef unsigned short InputPixelType;
typedef itk::Image< InputPixelType, Dimension > InputImageType;
typedef itk::ImageRegionIteratorWithIndex< InputImageType >
InputIteratorType;
typedef itk::ImageFileReader< InputImageType > ReaderType;
typedef float PixelType;
typedef itk::WhitakerSparseLevelSetImage< PixelType, Dimension >
SparseLevelSetType;
typedef itk::BinaryImageToLevelSetImageAdaptor< InputImageType, SparseLevelSetType >
BinaryToSparseAdaptorType;
typedef itk::IdentifierType IdentifierType;
typedef itk::LevelSetContainer< IdentifierType, SparseLevelSetType >
LevelSetContainerType;
typedef itk::LevelSetEquationChanAndVeseInternalTerm< InputImageType, LevelSetContainerType >
ChanAndVeseInternalTermType;
typedef itk::LevelSetEquationChanAndVeseExternalTerm< InputImageType, LevelSetContainerType >
ChanAndVeseExternalTermType;
typedef itk::LevelSetEquationCurvatureTerm< InputImageType, LevelSetContainerType >
CurvatureTermType;
typedef itk::LevelSetEquationPropagationTerm< InputImageType, LevelSetContainerType >
PropagationTermType;
typedef itk::LevelSetEquationLaplacianTerm< InputImageType, LevelSetContainerType >
LaplacianTermType;
typedef itk::LevelSetEquationTermContainer< InputImageType, LevelSetContainerType >
TermContainerType;
typedef itk::LevelSetEquationContainer< TermContainerType >
EquationContainerType;
typedef itk::LevelSetEvolution< EquationContainerType, SparseLevelSetType >
LevelSetEvolutionType;
typedef SparseLevelSetType::OutputRealType LevelSetOutputRealType;
typedef itk::SinRegularizedHeavisideStepFunction< LevelSetOutputRealType, LevelSetOutputRealType >
HeavisideFunctionBaseType;
typedef itk::ImageRegionIteratorWithIndex< InputImageType > InputIteratorType;
// load binary mask
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName( argv[1] );
reader->Update();
InputImageType::Pointer input = reader->GetOutput();
// Binary initialization
InputImageType::Pointer binary = InputImageType::New();
binary->SetRegions( input->GetLargestPossibleRegion() );
binary->CopyInformation( input );
binary->Allocate();
binary->FillBuffer( itk::NumericTraits<InputPixelType>::ZeroValue() );
InputImageType::RegionType region;
InputImageType::IndexType index;
InputImageType::SizeType size;
index.Fill( 10 );
size.Fill( 30 );
region.SetIndex( index );
region.SetSize( size );
InputIteratorType iIt( binary, region );
iIt.GoToBegin();
while( !iIt.IsAtEnd() )
{
iIt.Set( itk::NumericTraits<InputPixelType>::OneValue() );
++iIt;
}
// Convert binary mask to sparse level set
BinaryToSparseAdaptorType::Pointer adaptor = BinaryToSparseAdaptorType::New();
adaptor->SetInputImage( binary );
adaptor->Initialize();
std::cout << "Finished converting to sparse format" << std::endl;
SparseLevelSetType::Pointer level_set = adaptor->GetModifiableLevelSet();
// Define the Heaviside function
HeavisideFunctionBaseType::Pointer heaviside = HeavisideFunctionBaseType::New();
heaviside->SetEpsilon( 1.0 );
// Insert the levelsets in a levelset container
LevelSetContainerType::Pointer lscontainer = LevelSetContainerType::New();
lscontainer->SetHeaviside( heaviside );
bool LevelSetNotYetAdded = lscontainer->AddLevelSet( 0, level_set, false );
if ( !LevelSetNotYetAdded )
{
return EXIT_FAILURE;
}
std::cout << "Level set container created" << std::endl;
// **************** CREATE ALL TERMS ****************
// -----------------------------
// *** 1st Level Set phi ***
// Create ChanAndVese internal term for phi_{1}
ChanAndVeseInternalTermType::Pointer cvInternalTerm0 = ChanAndVeseInternalTermType::New();
cvInternalTerm0->SetInput( input );
cvInternalTerm0->SetCoefficient( 1.0 );
std::cout << "LevelSet 1: CV internal term created" << std::endl;
// Create ChanAndVese external term for phi_{1}
ChanAndVeseExternalTermType::Pointer cvExternalTerm0 = ChanAndVeseExternalTermType::New();
cvExternalTerm0->SetInput( input );
cvExternalTerm0->SetCoefficient( 1.0 );
std::cout << "LevelSet 1: CV external term created" << std::endl;
// Create ChanAndVese curvature term for phi_{1}
CurvatureTermType::Pointer curvatureTerm0 = CurvatureTermType::New();
curvatureTerm0->SetInput( input );
curvatureTerm0->SetCoefficient( 1.0 );
std::cout << "LevelSet 1: Curvature term created" << std::endl;
// Create ChanAndVese curvature term for phi_{1}
PropagationTermType::Pointer propagationTerm0 = PropagationTermType::New();
propagationTerm0->SetInput( input );
propagationTerm0->SetCoefficient( 1.0 );
std::cout << "LevelSet 1: Propagation term created" << std::endl;
// Create ChanAndVese curvature term for phi_{1}
LaplacianTermType::Pointer laplacianTerm0 = LaplacianTermType::New();
laplacianTerm0->SetInput( input );
laplacianTerm0->SetCoefficient( 1.0 );
std::cout << "LevelSet 1: Laplacian term created" << std::endl;
// **************** CREATE ALL EQUATIONS ****************
// Create Term Container
TermContainerType::Pointer termContainer0 = TermContainerType::New();
termContainer0->SetInput( input );
termContainer0->SetCurrentLevelSetId( 0 );
termContainer0->SetLevelSetContainer( lscontainer );
termContainer0->AddTerm( 0, cvInternalTerm0 );
termContainer0->AddTerm( 1, cvExternalTerm0 );
termContainer0->AddTerm( 2, curvatureTerm0 );
termContainer0->AddTerm( 3, propagationTerm0 );
termContainer0->AddTerm( 4, laplacianTerm0 );
std::cout << "Term container 0 created" << std::endl;
EquationContainerType::Pointer equationContainer = EquationContainerType::New();
equationContainer->AddEquation( 0, termContainer0 );
typedef itk::LevelSetEvolutionNumberOfIterationsStoppingCriterion< LevelSetContainerType >
StoppingCriterionType;
StoppingCriterionType::Pointer criterion = StoppingCriterionType::New();
criterion->SetNumberOfIterations( 5 );
LevelSetEvolutionType::Pointer evolution = LevelSetEvolutionType::New();
evolution->SetEquationContainer( equationContainer );
evolution->SetStoppingCriterion( criterion );
evolution->SetLevelSetContainer( lscontainer );
try
{
evolution->Update();
}
catch ( itk::ExceptionObject& err )
{
std::cout << err << std::endl;
}
return EXIT_SUCCESS;
}
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