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| This example demonstrates how to traverse an itkImage without write access to the pixels.
| | {{warning|1=The media wiki content on this page is no longer maintained.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 releases. In many cases, the examples on this page no longer conform to the best practices for modern ITK versions.}} |
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| ==ImageRegionConstIterator.cxx==
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| <source lang="cpp">
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| #include "itkImage.h"
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| #include "itkImageFileReader.h"
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| #include "itkImageRegionConstIterator.h"
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| int main(int argc, char*argv[])
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| { | |
| if(argc < 2)
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| {
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| std::cerr << "Required: filename" << std::endl;
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| return EXIT_FAILURE;
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| }
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| typedef itk::Image<unsigned char, 2> ImageType;
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| typedef itk::ImageFileReader<ImageType> ReaderType;
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| ReaderType::Pointer reader = ReaderType::New();
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| reader->SetFileName(argv[1]);
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| reader->Update();
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| ImageType::Pointer image = reader->GetOutput();
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|
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| ImageType::SizeType regionSize;
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| regionSize[0] = 5;
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| regionSize[1] = 4;
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| ImageType::IndexType regionIndex;
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| regionIndex[0] = 0;
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| regionIndex[1] = 0;
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| ImageType::RegionType region;
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| region.SetSize(regionSize);
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| region.SetIndex(regionIndex);
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| itk::ImageRegionConstIterator<ImageType> imageIterator(image,region);
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| //itk::ImageRegionConstIterator<ImageType> imageIterator(image,image->GetLargestPossibleRegion());
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| while(!imageIterator.IsAtEnd())
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| {
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| // Get the value of the current pixel
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| unsigned char val = imageIterator.Get();
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| std::cout << (int)val << std::endl;
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| ++imageIterator;
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| }
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| return EXIT_SUCCESS;
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| }
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| </source>
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| ==CMakeLists.txt==
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| <source lang="cmake">
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| cmake_minimum_required(VERSION 2.6)
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| PROJECT(ImageRegionConstIterator)
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| include_directories(/home/doriad/src/ITK/Wrapping/WrapITK/ExternalProjects/ItkVtkGlue/src/)
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|
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| FIND_PACKAGE(VTK REQUIRED)
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| INCLUDE(${VTK_USE_FILE})
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| FIND_PACKAGE(ITK REQUIRED)
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| INCLUDE(${ITK_USE_FILE})
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| ADD_EXECUTABLE(ImageRegionConstIterator ImageRegionConstIterator.cxx)
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| TARGET_LINK_LIBRARIES(ImageRegionConstIterator vtkHybrid
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| ITKNumerics ITKBasicFilters ITKCommon ITKIO)
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| </source>
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