ITK/Examples/ImageProcessing/ZeroCrossingImageFilter: Difference between revisions

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(Deprecated content that is moved to sphinx)
 
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<div class="floatcenter">[[File:ITK_Examples_Baseline_ImageProcessing_TestZeroCrossingImageFilter.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.
==ZeroCrossingImageFilter.cxx==
}}
<source lang="cpp">
#include "itkImageFileReader.h"
#include "itkZeroCrossingImageFilter.h"
 
#include "itksys/SystemTools.hxx"
#include <sstream>
 
#include "QuickView.h"
 
typedef itk::Image<float, 2>  ImageType;
 
static void CreateImage(ImageType::Pointer image);
 
int main(int argc, char *argv[])
{
  ImageType::Pointer image = ImageType::New();
  if (argc < 2)
    {
    CreateImage(image);
    }
  else
    {
    typedef itk::ImageFileReader<ImageType> ReaderType;
    ReaderType::Pointer reader = ReaderType::New();
    reader->SetFileName(argv[1]);
    reader->Update();
    image = reader->GetOutput();
    }
 
  typedef  itk::ZeroCrossingImageFilter< ImageType, ImageType > FilterType;
  FilterType::Pointer filter = FilterType::New();
  filter->SetInput(image);
  filter->SetBackgroundValue(0);
  filter->SetForegroundValue(255);
   
  QuickView viewer;
  viewer.AddImage(
    image.GetPointer(),true,
    argc > 1 ? itksys::SystemTools::GetFilenameName(argv[1]) : "Generated image");  
 
  std::stringstream desc;
  desc << "Zero Crossing";
  viewer.AddImage(
    filter->GetOutput(),
    true,
    desc.str());  
 
  viewer.Visualize();
 
  return EXIT_SUCCESS;
}
 
void CreateImage(ImageType::Pointer 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(-1);
 
  // Make half of the image negative
  for(unsigned int i = 0; i < 100; ++i)
    {
    for(unsigned int j = 0; j < 50; ++j)
      {
      itk::Index<2> index;
      index[0] = i;
      index[1] = j;
      image->SetPixel(index, 1);
      }
    }
}
</source>
 
{{ITKCMakeLists|{{SUBPAGENAME}}}}

Latest revision as of 15:15, 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Warning: The media wiki content on this page is no longer maintained.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.