Difference between revisions of "ITK/Examples/ImageSegmentation/LabelImageToShapeLabelMapFilter"

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(Deprecated content that is moved to sphinx)
 
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==LabelImageToShapeLabelMapFilter.cxx==
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{{warning|1=The media wiki content on this page is no longer maintainedThe examples presented on the https://itk.org/Wiki/*  pages likely require ITK version 4.13 or earlier releases.   In many cases, the examples on this page no longer conform to the best practices for modern ITK versions.
<source lang="cpp">
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}}
#include "itkImage.h"
 
#include "itkImageFileWriter.h"
 
#include "itkLabelImageToShapeLabelMapFilter.h"
 
#include "itkConnectedComponentImageFilter.h"
 
 
 
typedef itk::Image<unsigned char, 2>  ImageType;
 
 
 
static void CreateImage(ImageType::Pointer image);
 
 
 
int main(int, char *[])
 
{
 
  ImageType::Pointer image = ImageType::New();
 
  CreateImage(image);
 
 
 
  typedef itk::ConnectedComponentImageFilter <ImageType, ImageType >
 
    ConnectedComponentImageFilterType;
 
  ConnectedComponentImageFilterType::Pointer connectedComponentImageFilter
 
    = ConnectedComponentImageFilterType::New ();
 
  connectedComponentImageFilter->SetInput(image);
 
  connectedComponentImageFilter->Update();
 
 
 
  typedef itk::LabelImageToShapeLabelMapFilter <ImageType>
 
    LabelImageToShapeLabelMapFilterType;
 
  LabelImageToShapeLabelMapFilterType::Pointer labelImageToShapeLabelMapFilter
 
    = LabelImageToShapeLabelMapFilterType::New ();
 
  labelImageToShapeLabelMapFilter->SetInput(connectedComponentImageFilter->GetOutput());
 
  labelImageToShapeLabelMapFilter->Update();
 
 
 
  // The output of this filter is an itk::LabelMap, which contains itk::LabelObject's
 
  std::cout << "There are " << labelImageToShapeLabelMapFilter->GetOutput()->GetNumberOfLabelObjects() << " objects." << std::endl;
 
   
 
  return EXIT_SUCCESS;
 
}
 
 
 
void CreateImage(ImageType::Pointer image)
 
{
 
  // Create an image with 2 connected components
 
  ImageType::RegionType region;
 
  ImageType::IndexType start;
 
  start[0] = 0;
 
  start[1] = 0;
 
 
 
  ImageType::SizeType size;
 
  unsigned int NumRows = 200;
 
  unsigned int NumCols = 300;
 
  size[0] = NumRows;
 
  size[1] = NumCols;
 
 
 
  region.SetSize(size);
 
  region.SetIndex(start);
 
 
 
  image->SetRegions(region);
 
  image->Allocate();
 
 
 
  // Make a square
 
   for(unsigned int r = 20; r < 80; r++)
 
    {
 
    for(unsigned int c = 30; c < 100; c++)
 
      {
 
      ImageType::IndexType pixelIndex;
 
      pixelIndex[0] = r;
 
      pixelIndex[1] = c;
 
 
 
      image->SetPixel(pixelIndex, 255);
 
      }
 
  }
 
 
 
  // Make another square
 
  for(unsigned int r = 100; r < 130; r++)
 
    {
 
    for(unsigned int c = 115; c < 160; c++)
 
      {
 
      ImageType::IndexType pixelIndex;
 
      pixelIndex[0] = r;
 
      pixelIndex[1] = c;
 
 
 
      image->SetPixel(pixelIndex, 255);
 
      }
 
  }
 
}
 
 
 
</source>
 
 
 
{{ITKCMakeLists|{{SUBPAGENAME}}}}
 

Latest revision as of 17:25, 4 June 2019

Warning: The media wiki content on this page is no longer maintained. The examples presented on the https://itk.org/Wiki/* pages likely require ITK version 4.13 or earlier releases. In many cases, the examples on this page no longer conform to the best practices for modern ITK versions.