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| ==ObjectByObjectLabelMapFilter.cxx== | | {{warning|1=The media wiki content on this page is no longer maintained.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 "itkImage.h"
| |
| #include "itkImageFileWriter.h"
| |
| #include "itkImageRegionIterator.h"
| |
| #include "itkBinaryImageToLabelMapFilter.h"
| |
| #include "itkObjectByObjectLabelMapFilter.h"
| |
| #include "itkLabelMapToLabelImageFilter.h"
| |
| #include "itkLabelImageToLabelMapFilter.h"
| |
| #include "itkScalarToRGBColormapImageFilter.h"
| |
| #include "itkConnectedComponentImageFilter.h"
| |
|
| |
|
| typedef itk::Image<unsigned char, 2> UnsignedCharImageType;
| | [https://itk.org/ITKExamples[ITK Sphinx Examples]] |
| | |
| typedef itk::RGBPixel<unsigned char> RGBPixelType;
| |
| typedef itk::Image<RGBPixelType, 2> RGBImageType;
| |
| | |
| static void CreateImage(UnsignedCharImageType::Pointer image);
| |
| | |
| int main(int, char *[])
| |
| {
| |
| UnsignedCharImageType::Pointer image = UnsignedCharImageType::New();
| |
| CreateImage(image);
| |
| | |
| typedef itk::LabelImageToLabelMapFilter<UnsignedCharImageType> LabelImageToLabelMapFilterType;
| |
| LabelImageToLabelMapFilterType::Pointer labelImageToLabelMapFilter = LabelImageToLabelMapFilterType::New();
| |
| labelImageToLabelMapFilter->SetInput(image);
| |
| labelImageToLabelMapFilter->Update();
| |
|
| |
| typedef itk::ConnectedComponentImageFilter <UnsignedCharImageType, UnsignedCharImageType >
| |
| ConnectedComponentImageFilterType;
| |
| ConnectedComponentImageFilterType::Pointer connectedComponentImageFilter
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| = ConnectedComponentImageFilterType::New();
| |
|
| |
| typedef itk::ObjectByObjectLabelMapFilter< LabelImageToLabelMapFilterType::OutputImageType > ObjectByObjectLabelMapFilterType;
| |
| ObjectByObjectLabelMapFilterType::Pointer objectByObjectLabelMapFilter = ObjectByObjectLabelMapFilterType::New();
| |
| objectByObjectLabelMapFilter->SetInput( labelImageToLabelMapFilter->GetOutput() );
| |
| objectByObjectLabelMapFilter->SetBinaryInternalOutput(false);
| |
| objectByObjectLabelMapFilter->SetFilter(connectedComponentImageFilter);
| |
| objectByObjectLabelMapFilter->Update();
| |
| | |
| typedef itk::LabelMapToLabelImageFilter<LabelImageToLabelMapFilterType::OutputImageType, UnsignedCharImageType> LabelMapToLabelImageFilterType;
| |
| LabelMapToLabelImageFilterType::Pointer labelMapToLabelImageFilter = LabelMapToLabelImageFilterType::New();
| |
| labelMapToLabelImageFilter->SetInput(objectByObjectLabelMapFilter->GetOutput());
| |
| labelMapToLabelImageFilter->Update();
| |
|
| |
| // Color each label/object a different color
| |
| typedef itk::ScalarToRGBColormapImageFilter<UnsignedCharImageType, RGBImageType> RGBFilterType;
| |
| RGBFilterType::Pointer colormapImageFilter = RGBFilterType::New();
| |
| colormapImageFilter->SetInput(labelMapToLabelImageFilter->GetOutput());
| |
| colormapImageFilter->SetColormap( RGBFilterType::Jet );
| |
| colormapImageFilter->Update();
| |
|
| |
| typedef itk::ImageFileWriter< RGBImageType > WriterType;
| |
| WriterType::Pointer writer = WriterType::New();
| |
| writer->SetInput( colormapImageFilter->GetOutput() );
| |
| writer->SetFileName("output.png");
| |
| writer->Update();
| |
| | |
| return EXIT_SUCCESS;
| |
| }
| |
| | |
| void CreateImage(UnsignedCharImageType::Pointer image)
| |
| {
| |
| // Create a black image with three white squares
| |
| itk::Index<2> start;
| |
| start.Fill(0);
| |
| | |
| itk::Size<2> size;
| |
| size.Fill(200);
| |
| | |
| itk::ImageRegion<2> region(start,size);
| |
| image->SetRegions(region);
| |
| image->Allocate();
| |
| | |
| itk::ImageRegionIterator<UnsignedCharImageType> imageIterator(image,image->GetLargestPossibleRegion());
| |
| | |
| // Make a region of two disjoint squares
| |
| while(!imageIterator.IsAtEnd())
| |
| {
| |
| if(((imageIterator.GetIndex()[0] > 5 && imageIterator.GetIndex()[0] < 20) &&
| |
| (imageIterator.GetIndex()[1] > 5 && imageIterator.GetIndex()[1] < 20)) ||
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| ((imageIterator.GetIndex()[0] > 50 && imageIterator.GetIndex()[0] < 60) &&
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| (imageIterator.GetIndex()[1] > 50 && imageIterator.GetIndex()[1] < 60)) )
| |
| {
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| imageIterator.Set(10);
| |
| }
| |
| else if(((imageIterator.GetIndex()[0] > 100 && imageIterator.GetIndex()[0] < 130) &&
| |
| (imageIterator.GetIndex()[1] > 100 && imageIterator.GetIndex()[1] < 130)))
| |
| {
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| imageIterator.Set(20);
| |
| }
| |
| else
| |
| {
| |
| imageIterator.Set(0);
| |
| }
| |
| | |
| ++imageIterator;
| |
| }
| |
| | |
| // Color each label/object a different color
| |
| typedef itk::ScalarToRGBColormapImageFilter<UnsignedCharImageType, RGBImageType> RGBFilterType;
| |
| RGBFilterType::Pointer colormapImageFilter = RGBFilterType::New();
| |
| colormapImageFilter->SetInput(image);
| |
| colormapImageFilter->SetColormap( RGBFilterType::Jet );
| |
| colormapImageFilter->Update();
| |
|
| |
| typedef itk::ImageFileWriter< RGBImageType > WriterType;
| |
| WriterType::Pointer writer = WriterType::New();
| |
| writer->SetFileName("input.png");
| |
| writer->SetInput(colormapImageFilter->GetOutput());
| |
| writer->Update();
| |
|
| |
| }
| |
| | |
| </source>
| |
| | |
| {{ITKCMakeLists|ObjectByObjectLabelMapFilter}}
| |
