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| ==LabelOverlayImageFilter.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| | {{warning|1=The media wiki content on this page is no longer maintained.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 releases. In many cases, the examples on this page no longer conform to the best practices for modern ITK versions. |
| <source lang="cpp">
| | }} |
| #include "itkBinaryImageToLabelMapFilter.h"
| |
| #include "itkImage.h"
| |
| #include "itkImageFileWriter.h"
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| #include "itkImageRegionIterator.h"
| |
| #include "itkLabelMapToLabelImageFilter.h"
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| #include "itkLabelOverlayImageFilter.h"
| |
| #include "itkRGBPixel.h"
| |
| | |
| typedef itk::Image<unsigned char, 2> ImageType;
| |
| void CreateImage(ImageType::Pointer image);
| |
| | |
| int main(int, char *[])
| |
| { | |
| ImageType::Pointer image = ImageType::New();
| |
| CreateImage(image);
| |
| | |
| typedef itk::BinaryImageToLabelMapFilter<ImageType> BinaryImageToLabelMapFilterType;
| |
| BinaryImageToLabelMapFilterType::Pointer binaryImageToLabelMapFilter = BinaryImageToLabelMapFilterType::New();
| |
| binaryImageToLabelMapFilter->SetInput(image);
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| binaryImageToLabelMapFilter->Update();
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|
| |
| typedef itk::LabelMapToLabelImageFilter<BinaryImageToLabelMapFilterType::OutputImageType, ImageType> LabelMapToLabelImageFilterType;
| |
| LabelMapToLabelImageFilterType::Pointer labelMapToLabelImageFilter = LabelMapToLabelImageFilterType::New();
| |
| labelMapToLabelImageFilter->SetInput(binaryImageToLabelMapFilter->GetOutput());
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| labelMapToLabelImageFilter->Update();
| |
| | |
| typedef itk::RGBPixel<unsigned char> RGBPixelType;
| |
| typedef itk::Image<RGBPixelType> RGBImageType;
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|
| |
| typedef itk::LabelOverlayImageFilter<ImageType, ImageType, RGBImageType>
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| LabelOverlayImageFilterType;
| |
| LabelOverlayImageFilterType::Pointer labelOverlayImageFilter = LabelOverlayImageFilterType::New();
| |
| labelOverlayImageFilter->SetInput(image);
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| labelOverlayImageFilter->SetLabelImage(labelMapToLabelImageFilter->GetOutput());
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| labelOverlayImageFilter->SetOpacity(.5);
| |
| labelOverlayImageFilter->Update();
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|
| |
| typedef itk::ImageFileWriter< RGBImageType > WriterType;
| |
| WriterType::Pointer writer = WriterType::New();
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| writer->SetFileName("output.png");
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| writer->SetInput(labelOverlayImageFilter->GetOutput());
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| writer->Update();
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|
| |
| return EXIT_SUCCESS;
| |
| }
| |
| | |
| void CreateImage(ImageType::Pointer image)
| |
| {
| |
| // Create a black image with a white square
| |
| ImageType::IndexType start;
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| start.Fill(0);
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| | |
| ImageType::SizeType size;
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| size.Fill(100);
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| | |
| ImageType::RegionType region;
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| region.SetSize(size);
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| region.SetIndex(start);
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| image->SetRegions(region);
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| image->Allocate();
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| image->FillBuffer(0);
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| | |
| itk::ImageRegionIterator<ImageType> imageIterator(image,image->GetLargestPossibleRegion());
| |
| | |
| // Make two squares
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| while(!imageIterator.IsAtEnd())
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| {
| |
| if((imageIterator.GetIndex()[0] > 5 && imageIterator.GetIndex()[0] < 20) &&
| |
| (imageIterator.GetIndex()[1] > 5 && imageIterator.GetIndex()[1] < 20) )
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| {
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| imageIterator.Set(255);
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| }
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|
| |
| if((imageIterator.GetIndex()[0] > 50 && imageIterator.GetIndex()[0] < 70) &&
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| (imageIterator.GetIndex()[1] > 50 && imageIterator.GetIndex()[1] < 70) )
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| {
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| imageIterator.Set(255);
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| }
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| ++imageIterator;
| |
| }
| |
|
| |
| typedef itk::ImageFileWriter< ImageType > WriterType; | |
| WriterType::Pointer writer = WriterType::New();
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| writer->SetFileName("image.png");
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| writer->SetInput(image);
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| writer->Update();
| |
| }
| |
| | |
| </source>
| |
| | |
| {{ITKCMakeLists|LabelOverlayImageFilter}}
| |
