ITK/Examples/Morphology/FlatStructuringElement

Create a structuring element (kernel) that can be used for any of the morphology filters.

FlatStructuringElement.cxx

<source lang="cpp">

1. include "itkImage.h"
2. include "itkBinaryErodeImageFilter.h"
3. include "itkImageFileReader.h"
4. include "itkBinaryBallStructuringElement.h"

1. include "QuickView.h"

int main(int argc, char *argv[]) {

 if(argc < 2)
   {
   std::cerr << argv[0] << " InputImageFile [radius]" << std::endl;
   return EXIT_FAILURE;
   }

 unsigned int radius = 2;
 if (argc > 2)
   {
   radius = atoi(argv[2]);
   }

 typedef itk::Image<unsigned char, 2>    ImageType;
 typedef itk::ImageFileReader<ImageType> ReaderType;
 ReaderType::Pointer reader = ReaderType::New();
 reader->SetFileName(argv[1]);
 
 typedef itk::FlatStructuringElement<2> StructuringElementType;
 StructuringElementType::RadiusType elementRadius;
 elementRadius.Fill(3);

 StructuringElementType structuringElement = StructuringElementType::Box(elementRadius);

 typedef itk::BinaryErodeImageFilter <ImageType, ImageType, StructuringElementType>
   BinaryErodeImageFilterType;

 BinaryErodeImageFilterType::Pointer erodeFilter
   = BinaryErodeImageFilterType::New();
 erodeFilter->SetInput(reader->GetOutput());
 erodeFilter->SetKernel(structuringElement);
 erodeFilter->SetErodeValue(255);

 QuickView viewer;
 viewer.AddImage(reader->GetOutput());
 viewer.AddImage(erodeFilter->GetOutput());
 viewer.Visualize();

 return EXIT_SUCCESS;

} </source>

CMakeLists.txt

<source lang="cmake"> cmake_minimum_required(VERSION 2.6)

PROJECT(FlatStructuringElement)

include_directories(/home/doriad/src/ITK/Wrapping/WrapITK/ExternalProjects/ItkVtkGlue/src/)

FIND_PACKAGE(VTK REQUIRED) INCLUDE(${VTK_USE_FILE})

FIND_PACKAGE(ITK REQUIRED) INCLUDE(${ITK_USE_FILE})

ADD_EXECUTABLE(FlatStructuringElement FlatStructuringElement.cxx) TARGET_LINK_LIBRARIES(FlatStructuringElement vtkHybrid ITKBasicFilters ITKCommon ITKIO)

</source>