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| This example demonstrates how to check if two regions of an image overlap/intersect.
| | {{warning|1=The media wiki content on this page is no longer maintained.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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| ==RegionIntersection.cxx==
| | [https://itk.org/ITKExamples[ITK Sphinx Examples]] |
| <source lang="cpp">
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| #include <itkImage.h>
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| int main(int, char*[])
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| {
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| typedef itk::Image<unsigned char, 2> ImageType;
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| // Big region
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| ImageType::RegionType bigRegion;
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| ImageType::SizeType bigSize;
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| bigSize[0] = 100;
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| bigSize[1] = 100;
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| ImageType::IndexType bigStart;
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| bigStart[0] = 0;
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| bigStart[1] = 0;
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|
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| bigRegion.SetSize(bigSize);
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| bigRegion.SetIndex(bigStart);
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| // Small inside region
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| ImageType::RegionType smallInsideRegion;
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| ImageType::SizeType smallInsideSize;
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| smallInsideSize[0] = 10;
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| smallInsideSize[1] = 10;
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| ImageType::IndexType smallInsideStart;
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| smallInsideStart[0] = 50;
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| smallInsideStart[1] = 50;
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| smallInsideRegion.SetSize(smallInsideSize);
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| smallInsideRegion.SetIndex(smallInsideStart);
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| std::cout << "Small inside region is " << bigRegion.IsInside(smallInsideRegion) << std::endl;
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|
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| // Small outside region
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| ImageType::RegionType smallOutsideRegion;
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| ImageType::SizeType smallOutsideSize;
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| smallOutsideSize[0] = 10;
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| smallOutsideSize[1] = 10;
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| ImageType::IndexType smallOutsideStart;
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| smallOutsideStart[0] = 110;
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| smallOutsideStart[1] = 110;
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| smallOutsideRegion.SetSize(smallOutsideSize);
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| smallOutsideRegion.SetIndex(smallOutsideStart);
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| std::cout << "Small outside region is " << bigRegion.IsInside(smallOutsideRegion) << std::endl;
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|
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| // Small overlap region
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| ImageType::RegionType smallOverlapRegion;
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| ImageType::SizeType smallOverlapSize;
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| smallOverlapSize[0] = 10;
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| smallOverlapSize[1] = 10;
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| ImageType::IndexType smallOverlapStart;
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| smallOverlapStart[0] = 97;
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| smallOverlapStart[1] = 97;
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| smallOverlapRegion.SetSize(smallOverlapSize);
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| smallOverlapRegion.SetIndex(smallOverlapStart);
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| std::cout << "Small overlap region is " << bigRegion.IsInside(smallOverlapRegion) << std::endl;
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|
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| return EXIT_SUCCESS;
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| }
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| </source>
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| {{ITKCMakeLists|{{SUBPAGENAME}}}}
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