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| [[File:ABC.png]]
| | {{warning|1=The media wiki content on this page is no longer maintained.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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| ==RegionOverlap.cxx==
| | [https://itk.org/ITKExamples[ITK Sphinx Examples]] |
| <source lang="cpp">
| |
| #include <stdlib.h>
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| #include <stdio.h>
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| | |
| #include "itkRGBPixel.h"
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| #include "itkImageRegionIterator.h"
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| #include "itkImageFileWriter.h"
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| | |
| int main( int argc, char *argv[] )
| |
| {
| |
| | |
| if ( argc < 2)
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| {
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| std::cerr << "Please provide an output image name." << std::endl;
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| return EXIT_FAILURE;
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| }
| |
| | |
| const char * out_file_name = argv[1];
| |
| | |
| const unsigned int Dimension = 2;
| |
| typedef unsigned char ComponentType;
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| typedef itk::RGBPixel < ComponentType > RGBPixelType;
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| typedef itk::Image< RGBPixelType, Dimension > RGBImageType;
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| typedef RGBImageType::RegionType RegionType;
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| typedef RGBImageType::IndexType IndexType;
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| typedef RGBImageType::SizeType SizeType;
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| typedef itk::ImageRegionIterator< RGBImageType > IteratorType;
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|
| |
| // Define the region of the entire image.
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| IndexType index = {0, 0};
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| SizeType size = {100, 100};
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| RegionType region(index,size);
| |
| | |
| // Now define two overlapping regions within that image.
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| IndexType indexA = {9, 9};
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| SizeType sizeA = {50, 50};
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| RegionType regionA(indexA,sizeA);
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| | |
| IndexType indexB = {39, 39};
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| SizeType sizeB = {50, 50};
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| RegionType regionB(indexB,sizeB);
| |
| | |
| // Region C is the intersection of A and B
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| // padded by 10 pixels.
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| RegionType regionC = regionA;
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| regionC.Crop( regionB );
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| regionC.PadByRadius( 10 );
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| | |
| RGBPixelType pix_black(0.0); // Initialize to (0,0,0)
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| | |
| RGBPixelType pix_red(0.0);
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| pix_red.SetRed( 255 );
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| | |
| RGBPixelType pix_green(0.0);
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| pix_green.SetGreen( 255 );
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| | |
| RGBPixelType pix_blue(0.0);
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| pix_blue.SetBlue( 255 );
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|
| |
| // A black canvas
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| RGBImageType::Pointer image = RGBImageType::New();
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| image->SetRegions( region );
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| image->Allocate();
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| image->FillBuffer( pix_black );
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| | |
| // Paint region A red.
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| IteratorType itA( image, regionA );
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| for (itA.GoToBegin(); !itA.IsAtEnd(); ++itA)
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| itA.Value() += pix_red;
| |
| | |
| // Paint region B green.
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| IteratorType itB( image, regionB );
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| for (itB.GoToBegin(); !itB.IsAtEnd(); ++itB)
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| itB.Value() += pix_green;
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| | |
| // Paint region C blue.
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| IteratorType itC( image, regionC );
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| for (itC.GoToBegin(); !itC.IsAtEnd(); ++itC)
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| itC.Value() += pix_blue;
| |
| | |
| // Writer
| |
| typedef itk::ImageFileWriter< RGBImageType > FileWriterType;
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| FileWriterType::Pointer writer = FileWriterType::New();
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| writer->SetFileName( out_file_name );
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| writer->SetInput( image );
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| | |
| try
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| {
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| writer->Update();
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| }
| |
| catch( itk::ExceptionObject & excep )
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| {
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| std::cerr << "Exception caught !" << std::endl;
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| std::cerr << excep << std::endl;
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| return EXIT_FAILURE;
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| }
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| | |
| return EXIT_SUCCESS;
| |
| | |
| }
| |
| </source>
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| | |
| {{ITKCMakeLists|{{SUBPAGENAME}}}}
| |
