ITK/Examples/Morphology/GrayscaleErodeImageFilter

Erode regions in a grayscale image using a specified kernel.

GrayscaleErodeImageFilter.cxx

<source lang="cpp">

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

1. include "QuickView.h"

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

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

 typedef itk::Image<unsigned char, 2>  ImageType;
 typedef itk::ImageFileReader<ImageType> ReaderType;
 ReaderType::Pointer reader = ReaderType::New();
 reader->SetFileName(argv[1]);

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

 typedef itk::BinaryBallStructuringElement<
   ImageType::PixelType,
   2>                  StructuringElementType;
 StructuringElementType structuringElement;
 structuringElement.SetRadius(radius);
 structuringElement.CreateStructuringElement();

 typedef itk::GrayscaleErodeImageFilter <ImageType, ImageType, StructuringElementType>
   GrayscaleErodeImageFilterType;

 GrayscaleErodeImageFilterType::Pointer erodeFilter
   = GrayscaleErodeImageFilterType::New();
 erodeFilter->SetInput(reader->GetOutput());
 erodeFilter->SetKernel(structuringElement);

 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(GrayscaleErodeImageFilter)

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(GrayscaleErodeImageFilter GrayscaleErodeImageFilter.cxx) TARGET_LINK_LIBRARIES(GrayscaleErodeImageFilter vtkHybrid ITKBasicFilters ITKCommon ITKIO)

</source>