ITK/Examples/Iterators/LineIterator: Difference between revisions

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==LineIterator.cxx==
{{warning|1=The media wiki content on this page is no longer maintained.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 releasesIn many cases, the examples on this page no longer conform to the best practices for modern ITK versions.
<source lang="cpp">
}}
#include "itkImage.h"
#include "itkRGBPixel.h"
#include "itkImageFileReader.h"
#include "itkImageRegionIterator.h"
#include "itkLineIterator.h"
 
#include "itksys/SystemTools.hxx"
 
#include "QuickView.h"
 
typedef itk::RGBPixel<unsigned char> PixelType;
typedef itk::Image<PixelType, 2>    ImageType;
 
static void CreateImage(ImageType::Pointer image);
 
int main(int argc, char*argv[])
{
  ImageType::Pointer image = ImageType::New();
  std::string inputFilename;
  if (argc < 2)
    {
    CreateImage(image);
    inputFilename = "Synthetic";
    }
  else
    {
    typedef itk::ImageFileReader<ImageType> ReaderType;
    ReaderType::Pointer reader = ReaderType::New();
    reader->SetFileName (argv[1]);
    reader->Update();
    image = reader->GetOutput();
    inputFilename = argv[1];
    }
 
  PixelType pixel;
  pixel.SetRed(255);
  pixel.SetGreen(127);
  pixel.SetBlue(50);
 
  ImageType::RegionType region = image->GetLargestPossibleRegion();
  ImageType::IndexType corner1 = region.GetIndex();
  ImageType::IndexType corner2;
 
  corner2[0] = corner1[0] + region.GetSize()[0] - 1;
  corner2[1] = corner1[1] + region.GetSize()[1] - 1;
 
  itk::LineIterator<ImageType> it1(image, corner1, corner2);
  it1.GoToBegin();
  while (!it1.IsAtEnd())
    {
   
    it1.Set(pixel);
    ++it1;
    }
 
  QuickView viewer;
  if (argc > 1)
    {
    viewer.AddImage<ImageType>(
      image,
      true,
      itksys::SystemTools::GetFilenameName(argv[1])); 
    }
   else
    {
    viewer.AddImage<ImageType>(
      image,
      true,
      "Synthetic");
    }
  viewer.Visualize();
 
  return EXIT_SUCCESS;
}
 
void CreateImage(ImageType::Pointer image)
{
  ImageType::SizeType regionSize;
  regionSize.Fill(100);
 
  ImageType::IndexType regionIndex;
  regionIndex.Fill(0);
 
  ImageType::RegionType region;
  region.SetSize(regionSize);
  region.SetIndex(regionIndex);
 
  PixelType pixel;
  pixel.SetRed(0);
  pixel.SetGreen(127);
  pixel.SetBlue(200);
 
  image->SetRegions(region);
  image->Allocate();
  image->FillBuffer(pixel);
 
}
</source>
 
{{ITKVTKCMakeLists|{{SUBPAGENAME}}}}

Latest revision as of 14:28, 6 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.