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| | {{warning|1=The media wiki content on this page is no longer maintained.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