ITK/Examples/ImageProcessing/AddPixelAccessor: Difference between revisions

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Add a constant to pixels when they are accessed.
{{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.
 
}}
==AddPixelAccessor.cxx==
<source lang="cpp">
#include "itkImage.h"
#include "itkAddPixelAccessor.h"
#include "itkImageAdaptor.h"
#include "itkImageRegionIterator.h"
typedef itk::Image<unsigned int, 2>  ImageType;
static void CreateImage(ImageType::Pointer image);
int main(int, char *[])
{
  ImageType::Pointer image = ImageType::New();
  CreateImage(image);
  typedef itk::Accessor::AddPixelAccessor <ImageType::PixelType>
    AddPixelAccessorType;
  typedef itk::ImageAdaptor<  ImageType, AddPixelAccessorType >
    ImageAdaptorType;
 
  ImageAdaptorType::Pointer adaptor = ImageAdaptorType::New();
  AddPixelAccessorType addPixelAccessor;
 
 
  adaptor->SetImage(image);
  ImageType::IndexType index;
  index[0] = 0;
  index[1] = 0;
 
  addPixelAccessor.SetValue(5);
  adaptor->SetPixelAccessor(addPixelAccessor);
  std::cout << "addPixelAccessor.SetValue(5)" << std::endl;
  std::cout << "\timage->GetPixel" << index << ": " << image->GetPixel(index)
            << " adaptor->GetPixel" << index << ": " << adaptor->GetPixel(index)
            << std::endl;
 
  addPixelAccessor.SetValue(100);
  adaptor->SetPixelAccessor(addPixelAccessor);
  std::cout << "addPixelAccessor.SetValue(100)" << std::endl;
  std::cout << "\timage->GetPixel" << index << ": " << image->GetPixel(index)
            << " adaptor->GetPixel" << index << ": " << adaptor->GetPixel(index)
            << std::endl;
 
  return EXIT_SUCCESS;
}
   
void CreateImage(ImageType::Pointer image)
{
  ImageType::IndexType start;
  start.Fill(0);
   
  ImageType::SizeType size;
  size.Fill(10);
  ImageType::RegionType region;
  region.SetSize(size);
  region.SetIndex(start);
  image->SetRegions(region);
  image->Allocate();
   itk::ImageRegionIterator<ImageType> imageIterator(image,image->GetLargestPossibleRegion());
  while(!imageIterator.IsAtEnd())
    {
    imageIterator.Set(20);
    ++imageIterator;
    }
}
</source>
 
{{ITKVTKCMakeLists|AddPixelAccessor|}}

Latest revision as of 16:55, 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.