ITK/Examples/ImageProcessing/SignedDanielssonDistanceMapImageFilter: Difference between revisions

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<div class="floatcenter">[[File:ITK_Examples_Baseline_ImageProcessing_TestSignedDanielssonDistanceMapImageFilter.png]]</div>
{{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 releasesIn many cases, the examples on this page no longer conform to the best practices for modern ITK versions.
 
}}
==SignedDanielssonDistanceMapImageFilter.cxx==
<source lang="cpp">
#include "itkImage.h"
#include "itkImageFileReader.h"
#include "itkSignedDanielssonDistanceMapImageFilter.h"
 
#include "itksys/SystemTools.hxx"
#include <sstream>
 
#include "QuickView.h"
 
typedef itk::Image<unsigned char, 2>  UnsignedCharImageType;
typedef itk::Image<float, 2>          FloatImageType;
static void CreateImage(UnsignedCharImageType::Pointer image);
 
int main(int argc, char * argv[])
{
  UnsignedCharImageType::Pointer image = UnsignedCharImageType::New();
  if (argc < 2)
    {
    CreateImage(image);
    }
  else
    {
    typedef itk::ImageFileReader<UnsignedCharImageType> ReaderType;
    ReaderType::Pointer reader = ReaderType::New();
    reader->SetFileName(argv[1]);
    reader->Update();
    image = reader->GetOutput();
    }
 
  typedef  itk::SignedDanielssonDistanceMapImageFilter< UnsignedCharImageType, FloatImageType  > SignedDanielssonDistanceMapImageFilterType;
  SignedDanielssonDistanceMapImageFilterType::Pointer distanceMapImageFilter =
    SignedDanielssonDistanceMapImageFilterType::New();
  distanceMapImageFilter->SetInput(image);
 
  QuickView viewer;
  viewer.AddImage(
    image.GetPointer(),true,
    argc > 1 ? itksys::SystemTools::GetFilenameName(argv[1]) : "Generated image"); 
 
  std::stringstream desc;
  desc << "Signed Danielsson Distance";
  viewer.AddImage(
    distanceMapImageFilter->GetOutput(),
    true,
    desc.str());  
 
  viewer.Visualize();
 
  return EXIT_SUCCESS;
}
 
 
void CreateImage(UnsignedCharImageType::Pointer image)
{
  // Create an image
  itk::Index<2> start;
  start.Fill(0);
   
  itk::Size<2> size;
  size.Fill(100);
   itk::ImageRegion<2> region(start, size);
  image->SetRegions(region);
  image->Allocate();
  image->FillBuffer(0);
  // Create a line of white pixels
  for(unsigned int i = 40; i < 60; ++i)
    {
    itk::Index<2> pixel;
    pixel.Fill(i);
    image->SetPixel(pixel, 255);
    }
}
</source>
{{ITKVTKCMakeLists|SignedDanielssonDistanceMapImageFilter|}}

Latest revision as of 14:42, 5 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.