ITK/Examples/Morphology/BinaryPruningImageFilter

BinaryPruningImageFilter.cxx

<source lang="cpp">

1. include "itkImage.h"
2. include "itkBinaryPruningImageFilter.h"
3. include "itkImageFileReader.h"
4. include "itkBinaryBallStructuringElement.h"
5. include "itkImageFileWriter.h"

1. include "QuickView.h"

template <typename TImage> void CreateImage(TImage* const image);

int main(int argc, char *argv[]) { // std::cerr << "Usage: " << std::endl; // std::cerr << argv[0] << " InputImageFile OutputImageFile [iteration]" << std::endl;

 typedef itk::Image<unsigned char, 2> ImageType;
 ImageType::Pointer image;

 unsigned int iteration = 1;

 if(argc < 3)
   {
   image = ImageType::New();
   CreateImage(image.GetPointer());
   }
 else
 {
   typedef itk::ImageFileReader<ImageType> ReaderType;
   ReaderType::Pointer reader = ReaderType::New();
   reader->SetFileName(argv[1]);
   image = reader->GetOutput();
   std::stringstream ssIteration(argv[2]);
 }

 typedef itk::BinaryPruningImageFilter <ImageType, ImageType >
         BinaryPruningImageFilterType;
 BinaryPruningImageFilterType::Pointer pruneFilter
         = BinaryPruningImageFilterType::New();
 pruneFilter->SetInput(image);
 pruneFilter->SetIteration(iteration);
 pruneFilter->GetOutput();

 QuickView viewer;
 viewer.AddImage(image.GetPointer());
 viewer.AddImage(pruneFilter->GetOutput());
 viewer.Visualize();

 return EXIT_SUCCESS;

}

template <typename TImage> void CreateImage(TImage* const image) {

 // This function creates a 2D image consisting of a black background,
 // a large square of a non-zero pixel value, and a single "erroneous" pixel
 // near the square.
 typename TImage::IndexType corner = Template:0,0;

 typename TImage::SizeType size = Template:200,200;

 typename TImage::RegionType region(corner, size);

 image->SetRegions(region);
 image->Allocate();

 // Make a square
 for(unsigned int r = 40; r < 100; r++)
   {
   for(unsigned int c = 40; c < 100; c++)
     {
     typename TImage::IndexType pixelIndex = Template:R,c;
     image->SetPixel(pixelIndex, 50);
     }
   }

 typename TImage::IndexType pixelIndex = Template:102, 102;

 image->SetPixel(pixelIndex, 50);

}

</source>

CMakeLists.txt

<syntaxhighlight lang="cmake"> cmake_minimum_required(VERSION 3.9.5)

project(BinaryPruningImageFilter)

find_package(ITK REQUIRED) include(${ITK_USE_FILE}) if (ITKVtkGlue_LOADED)

 find_package(VTK REQUIRED)
 include(${VTK_USE_FILE})

endif()

add_executable(BinaryPruningImageFilter MACOSX_BUNDLE BinaryPruningImageFilter.cxx)

if( "${ITK_VERSION_MAJOR}" LESS 4 )

 target_link_libraries(BinaryPruningImageFilter ITKReview ${ITK_LIBRARIES})

else( "${ITK_VERSION_MAJOR}" LESS 4 )

 target_link_libraries(BinaryPruningImageFilter ${ITK_LIBRARIES})

endif( "${ITK_VERSION_MAJOR}" LESS 4 )

</syntaxhighlight>

Download and Build BinaryPruningImageFilter

Click here to download BinaryPruningImageFilter and its CMakeLists.txt file. Once the tarball BinaryPruningImageFilter.tar has been downloaded and extracted,

cd BinaryPruningImageFilter/build

• If ITK is installed:

cmake ..

• If ITK is not installed but compiled on your system, you will need to specify the path to your ITK build:

cmake -DITK_DIR:PATH=/home/me/itk_build ..

Build the project:

make

and run it:

./BinaryPruningImageFilter

WINDOWS USERS PLEASE NOTE: Be sure to add the ITK bin directory to your path. This will resolve the ITK dll's at run time.

Building All of the Examples

Many of the examples in the ITK Wiki Examples Collection require VTK. You can build all of the the examples by following these instructions. If you are a new VTK user, you may want to try the Superbuild which will build a proper ITK and VTK.

ItkVtkGlue

ITK >= 4

For examples that use QuickView (which depends on VTK), you must have built ITK with Module_ITKVtkGlue=ON.

ITK < 4

Some of the ITK Examples require VTK to display the images. If you download the entire ITK Wiki Examples Collection, the ItkVtkGlue directory will be included and configured. If you wish to just build a few examples, then you will need to download ItkVtkGlue and build it. When you run cmake it will ask you to specify the location of the ItkVtkGlue binary directory.