ITK  4.13.0
Insight Segmentation and Registration Toolkit
SphinxExamples/src/Filtering/LabelMap/ApplyMorphologicalClosingOnAllLabelObjects/Code.cxx
/*=========================================================================
*
* 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.
*
*=========================================================================*/
int main( int argc, char* argv[] )
{
if( argc != 4 )
{
std::cerr << "Usage: "<< std::endl;
std::cerr << argv[0];
std::cerr << " <InputFileName> <OutputFileName> <radius>";
std::cerr << std::endl;
return EXIT_FAILURE;
}
const char * inputFileName = argv[1];
const char * outputFileName = argv[2];
const unsigned int radiusValue = atoi( argv[3] );
const unsigned int Dimension = 2;
typedef unsigned char PixelType;
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName( inputFileName );
typedef itk::LabelMap< LabelObjectType > LabelMapType;
typedef itk::LabelImageToLabelMapFilter< ImageType, LabelMapType > LabelImageToLabelMapFilterType;
LabelImageToLabelMapFilterType::Pointer labelMapConverter = LabelImageToLabelMapFilterType::New();
labelMapConverter->SetInput( reader->GetOutput() );
labelMapConverter->SetBackgroundValue( itk::NumericTraits< PixelType >::Zero );
typedef itk::FlatStructuringElement< Dimension > StructuringElementType;
StructuringElementType::RadiusType radius;
radius.Fill( radiusValue );
StructuringElementType structuringElement = StructuringElementType::Ball( radius );
MorphologicalFilterType::Pointer closingFilter = MorphologicalFilterType::New();
typedef itk::ObjectByObjectLabelMapFilter< LabelMapType > ObjectByObjectLabelMapFilterType;
ObjectByObjectLabelMapFilterType::Pointer objectByObjectLabelMapFilter = ObjectByObjectLabelMapFilterType::New();
objectByObjectLabelMapFilter->SetInput( labelMapConverter->GetOutput() );
objectByObjectLabelMapFilter->SetBinaryInternalOutput( true );
objectByObjectLabelMapFilter->SetFilter( closingFilter );
typedef itk::LabelUniqueLabelMapFilter< LabelMapType > UniqueLabelMapFilterType;
UniqueLabelMapFilterType::Pointer unique = UniqueLabelMapFilterType::New();
unique->SetInput( objectByObjectLabelMapFilter->GetOutput() );
typedef itk::LabelMapToLabelImageFilter< LabelMapType, ImageType > LabelMapToLabelImageFilterType;
LabelMapToLabelImageFilterType::Pointer labelImageConverter = LabelMapToLabelImageFilterType::New();
labelImageConverter->SetInput( unique->GetOutput() );
WriterType::Pointer writer = WriterType::New();
writer->SetFileName( outputFileName );
writer->SetInput( labelImageConverter->GetOutput() );
try
{
writer->Update();
}
catch( itk::ExceptionObject & error )
{
std::cerr << "Error: " << error << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}