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| '''NOTE:''' Requires a QuickView as of April 8, 2015. Otherwise, comment out InterpolateOff() statements.
| | {{warning|1=The media wiki content on this page is no longer maintained.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. |
| ==LabelGeometryImageFilter.cxx==
| | }} |
| <source lang="cpp">
| |
| #include "itkImage.h"
| |
| #include "itkImageFileWriter.h"
| |
| #include "itkImageRegionIterator.h"
| |
| #include "itkImageFileReader.h"
| |
| #include "itkLabelGeometryImageFilter.h"
| |
| #include "itkLabelToRGBImageFilter.h"
| |
| | |
| #include "QuickView.h"
| |
| | |
| #include <sstream>
| |
| | |
| typedef itk::Image<unsigned int, 2> ImageType;
| |
| typedef itk::RGBPixel<unsigned char> RGBPixelType;
| |
| typedef itk::Image<RGBPixelType, 2> RGBImageType;
| |
| | |
| static void CreateIntensityImage(ImageType::Pointer image);
| |
| static void CreateLabelImage(ImageType::Pointer image);
| |
| | |
| int main(int argc, char *argv[])
| |
| { | |
| ImageType::Pointer labelImage = ImageType::New();
| |
| ImageType::Pointer intensityImage = ImageType::New();
| |
| int label = 1;
| |
| | |
| if (argc < 2)
| |
| {
| |
| // Create a label image that is 0 in the background and where the
| |
| // objects are labeled
| |
| CreateLabelImage(labelImage);
| |
| labelImage->Print(std::cout);
| |
| // Create an intensity image. Some LabelGeometry features (such as
| |
| // weighted centroid and integrated intensity) depend on an
| |
| // intensity image.
| |
| CreateIntensityImage(intensityImage);
| |
| }
| |
| else if (argc > 3)
| |
| {
| |
| typedef itk::ImageFileReader< ImageType > ImageReaderType;
| |
| ImageReaderType::Pointer labelReader =
| |
| ImageReaderType::New();
| |
| labelReader->SetFileName(argv[1]);
| |
| labelReader->Update();
| |
| | |
| labelImage = labelReader->GetOutput();
| |
| | |
| ImageReaderType::Pointer intensityReader =
| |
| ImageReaderType::New();
| |
| intensityReader->SetFileName(argv[2]);
| |
| intensityReader->Update();
| |
| | |
| intensityImage = intensityReader->GetOutput();
| |
| | |
| label = atoi(argv[3]);
| |
| }
| |
| | |
| // NOTE: As of April 8, 2015 the filter does not work with non-zero
| |
| // origins
| |
| double origin[2] = {0.0, 0.0};
| |
| labelImage->SetOrigin(origin);
| |
| intensityImage->SetOrigin(origin);
| |
| | |
| typedef itk::LabelGeometryImageFilter< ImageType > LabelGeometryImageFilterType;
| |
| LabelGeometryImageFilterType::Pointer labelGeometryImageFilter = LabelGeometryImageFilterType::New();
| |
| labelGeometryImageFilter->SetInput( labelImage );
| |
| labelGeometryImageFilter->SetIntensityInput( intensityImage );
| |
| | |
| // These generate optional outputs.
| |
| labelGeometryImageFilter->CalculatePixelIndicesOn();
| |
| labelGeometryImageFilter->CalculateOrientedBoundingBoxOn();
| |
| labelGeometryImageFilter->CalculateOrientedLabelRegionsOn();
| |
| labelGeometryImageFilter->CalculateOrientedIntensityRegionsOn();
| |
|
| |
| labelGeometryImageFilter->Update();
| |
| LabelGeometryImageFilterType::LabelsType allLabels =
| |
| labelGeometryImageFilter->GetLabels();
| |
|
| |
| typedef itk::LabelToRGBImageFilter<ImageType, RGBImageType> RGBFilterType;
| |
| RGBFilterType::Pointer rgbLabelImage =
| |
| RGBFilterType::New();
| |
| rgbLabelImage->SetInput(labelImage);
| |
| | |
| typedef itk::LabelToRGBImageFilter<ImageType, RGBImageType> RGBFilterType;
| |
| RGBFilterType::Pointer rgbOrientedImage =
| |
| RGBFilterType::New();
| |
| rgbOrientedImage->SetInput(labelGeometryImageFilter->GetOrientedLabelImage(allLabels[label]));
| |
| | |
| QuickView viewer;
| |
| viewer.ShareCameraOff();
| |
| viewer.InterpolateOff();
| |
| | |
| viewer.AddImage(
| |
| rgbLabelImage->GetOutput(),
| |
| true,
| |
| argc > 3 ? itksys::SystemTools::GetFilenameName(argv[1]) : "Generated label image");
| |
| viewer.AddImage(
| |
| intensityImage.GetPointer(),
| |
| true,
| |
| argc > 3 ? itksys::SystemTools::GetFilenameName(argv[2]) : "Generated intensity image");
| |
| | |
| std::stringstream desc;
| |
| desc << "Oriented Label: " << allLabels[label];
| |
| viewer.AddImage(
| |
| rgbOrientedImage->GetOutput(),
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| true,
| |
| desc.str());
| |
| | |
| std::stringstream desc2;
| |
| desc2 << "Oriented Intensity: " << allLabels[label];
| |
| viewer.AddImage( | |
| labelGeometryImageFilter->GetOrientedIntensityImage(allLabels[label]),
| |
| true,
| |
| desc2.str());
| |
| viewer.Visualize();
| |
| | |
| LabelGeometryImageFilterType::LabelsType::iterator allLabelsIt;
| |
| std::cout << "Number of labels: "
| |
| << labelGeometryImageFilter->GetNumberOfLabels() << std::endl;
| |
| std::cout << std::endl;
| |
| | |
| for( allLabelsIt = allLabels.begin(); allLabelsIt != allLabels.end(); allLabelsIt++ )
| |
| {
| |
| LabelGeometryImageFilterType::LabelPixelType labelValue = *allLabelsIt;
| |
| std::cout << "\tLabel: "
| |
| << (int)labelValue << std::endl;
| |
| std::cout << "\tVolume: "
| |
| << labelGeometryImageFilter->GetVolume(labelValue) << std::endl;
| |
| std::cout << "\tIntegrated Intensity: "
| |
| << labelGeometryImageFilter->GetIntegratedIntensity(labelValue) << std::endl;
| |
| std::cout << "\tCentroid: "
| |
| << labelGeometryImageFilter->GetCentroid(labelValue) << std::endl;
| |
| std::cout << "\tWeighted Centroid: "
| |
| << labelGeometryImageFilter->GetWeightedCentroid(labelValue) << std::endl;
| |
| std::cout << "\tAxes Length: "
| |
| << labelGeometryImageFilter->GetAxesLength(labelValue) << std::endl;
| |
| std::cout << "\tMajorAxisLength: "
| |
| << labelGeometryImageFilter->GetMajorAxisLength(labelValue) << std::endl;
| |
| std::cout << "\tMinorAxisLength: "
| |
| << labelGeometryImageFilter->GetMinorAxisLength(labelValue) << std::endl;
| |
| std::cout << "\tEccentricity: "
| |
| << labelGeometryImageFilter->GetEccentricity(labelValue) << std::endl;
| |
| std::cout << "\tElongation: "
| |
| << labelGeometryImageFilter->GetElongation(labelValue) << std::endl;
| |
| std::cout << "\tOrientation: "
| |
| << labelGeometryImageFilter->GetOrientation(labelValue) << std::endl;
| |
| std::cout << "\tBounding box: "
| |
| << labelGeometryImageFilter->GetBoundingBox(labelValue) << std::endl;
| |
|
| |
| std::cout << std::endl << std::endl;
| |
| }
| |
| | |
| return EXIT_SUCCESS;
| |
| }
| |
| | |
| void CreateIntensityImage(ImageType::Pointer image)
| |
| {
| |
| // Create a random image.
| |
| ImageType::IndexType start;
| |
| start.Fill(0);
| |
| | |
| ImageType::SizeType size;
| |
| size.Fill(20);
| |
| | |
| ImageType::RegionType region;
| |
| region.SetSize(size);
| |
| region.SetIndex(start);
| |
| image->SetRegions(region);
| |
| image->Allocate();
| |
| | |
| itk::ImageRegionIterator<ImageType> imageIterator(image,image->GetLargestPossibleRegion());
| |
| // Make a random image
| |
| // Create an unchanging seed.
| |
| srand(1);
| |
| while(!imageIterator.IsAtEnd())
| |
| {
| |
| int randomNumber = rand() % 255;
| |
| imageIterator.Set( randomNumber );
| |
| ++imageIterator;
| |
| }
| |
| }
| |
| | |
| void CreateLabelImage(ImageType::Pointer image)
| |
| {
| |
| // Create a black image with labeled squares.
| |
| ImageType::IndexType start;
| |
| start.Fill(0);
| |
| | |
| ImageType::SizeType size;
| |
| size.Fill(20);
| |
| | |
| ImageType::RegionType region;
| |
| region.SetSize(size);
| |
| region.SetIndex(start);
| |
| image->SetRegions(region);
| |
| image->Allocate();
| |
| | |
| itk::ImageRegionIterator<ImageType> imageIterator(image,image->GetLargestPossibleRegion());
| |
| | |
| // Make a square
| |
| while(!imageIterator.IsAtEnd())
| |
| {
| |
| if((imageIterator.GetIndex()[0] > 5 && imageIterator.GetIndex()[0] < 10) &&
| |
| (imageIterator.GetIndex()[1] > 5 && imageIterator.GetIndex()[1] < 10) )
| |
| {
| |
| imageIterator.Set(85);
| |
| }
| |
| else if((imageIterator.GetIndex()[0] > 11 && imageIterator.GetIndex()[0] < 17) &&
| |
| (imageIterator.GetIndex()[1] > 11 && imageIterator.GetIndex()[1] < 17) )
| |
| {
| |
| imageIterator.Set(127);
| |
| }
| |
| else if((imageIterator.GetIndex()[0] > 11 && imageIterator.GetIndex()[0] < 17) &&
| |
| (imageIterator.GetIndex()[1] > 1 && imageIterator.GetIndex()[1] < 5) )
| |
| {
| |
| imageIterator.Set(191);
| |
| }
| |
| else
| |
| {
| |
| imageIterator.Set(0);
| |
| }
| |
| | |
| ++imageIterator;
| |
| }
| |
| }
| |
| </source>
| |
| | |
| {{ITKCMakeLists|{{SUBPAGENAME}}}}
| |
