RadiusOutlierRemoval
VTKExamples/Cxx/Points/RadiusOutlierRemoval
Description¶
In this example, outliers are red. Yellow points satisfy the radius and neighbor restrictions.
Warning
The classes used in this example require vtk 7.1 or later.
Code¶
RadiusOutlierRemoval.cxx
#include <vtkSmartPointer.h> #include <vtkRadiusOutlierRemoval.h> #include <vtkPLYReader.h> #include <vtkXMLPolyDataReader.h> #include <vtkOBJReader.h> #include <vtkSTLReader.h> #include <vtkPointSource.h> #include <vtkSphereSource.h> #include <vtkGlyph3D.h> #include <vtkPolyDataMapper.h> #include <vtkProperty.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkRenderer.h> #include <vtkCamera.h> #include <vtksys/SystemTools.hxx> static vtkSmartPointer<vtkPolyData> ReadPolyData(const char *fileName); int main (int argc, char *argv[]) { vtkSmartPointer<vtkPolyData> polyData = ReadPolyData(argc > 1 ? argv[1] : "");; double bounds[6]; polyData->GetBounds(bounds); double range[3]; for (int i = 0; i < 3; ++i) { range[i] = bounds[2*i + 1] - bounds[2*i]; } std::cout << "Range: " << range[0] << ", " << range[1] << ", " << range[2] << std::endl; std::cout << "# of original points: " << polyData->GetNumberOfPoints() << std::endl; vtkSmartPointer<vtkRadiusOutlierRemoval> removal = vtkSmartPointer<vtkRadiusOutlierRemoval>::New(); removal->SetInputData(polyData); removal->SetRadius(range[0] / 50.0); removal->SetNumberOfNeighbors(6); removal->GenerateOutliersOn(); removal->Update(); std::cout << "# of removed points: " << removal->GetNumberOfPointsRemoved() << std::endl; /// double radius = range[0] * .01; vtkSmartPointer<vtkSphereSource> sphereSource1 = vtkSmartPointer<vtkSphereSource>::New(); sphereSource1->SetRadius(radius); vtkSmartPointer<vtkGlyph3D> glyph3D1 = vtkSmartPointer<vtkGlyph3D>::New(); glyph3D1->SetInputConnection(removal->GetOutputPort()); glyph3D1->SetSourceConnection(sphereSource1->GetOutputPort()); glyph3D1->ScalingOff(); glyph3D1->Update(); vtkSmartPointer<vtkPolyDataMapper> glyph3DMapper1 = vtkSmartPointer<vtkPolyDataMapper>::New(); glyph3DMapper1->SetInputConnection(glyph3D1->GetOutputPort()); glyph3DMapper1->ScalarVisibilityOff(); vtkSmartPointer<vtkActor> glyph3DActor1 = vtkSmartPointer<vtkActor>::New(); glyph3DActor1->SetMapper(glyph3DMapper1); glyph3DActor1->GetProperty()->SetColor(0.8900, 0.8100, 0.3400); //// vtkSmartPointer<vtkSphereSource> sphereSource2 = vtkSmartPointer<vtkSphereSource>::New(); sphereSource2->SetRadius(radius * .75); vtkSmartPointer<vtkGlyph3D> glyph3D2 = vtkSmartPointer<vtkGlyph3D>::New(); glyph3D2->SetInputConnection(removal->GetOutputPort(1)); glyph3D2->SetSourceConnection(sphereSource2->GetOutputPort()); glyph3D2->ScalingOff(); glyph3D2->Update(); vtkSmartPointer<vtkPolyDataMapper> glyph3DMapper2 = vtkSmartPointer<vtkPolyDataMapper>::New(); glyph3DMapper2->SetInputConnection(glyph3D2->GetOutputPort()); glyph3DMapper2->ScalarVisibilityOff(); vtkSmartPointer<vtkActor> glyph3DActor2 = vtkSmartPointer<vtkActor>::New(); glyph3DActor2->SetMapper(glyph3DMapper2); glyph3DActor2->GetProperty()->SetColor(1.0000, 0.4900, 0.2500); // Create graphics stuff // vtkSmartPointer<vtkRenderer> ren1 = vtkSmartPointer<vtkRenderer>::New(); ren1->SetBackground(.3, .4, .6); vtkSmartPointer<vtkRenderWindow> renWin = vtkSmartPointer<vtkRenderWindow>::New(); renWin->AddRenderer(ren1); renWin->SetSize(512,512); vtkSmartPointer<vtkRenderWindowInteractor> iren = vtkSmartPointer<vtkRenderWindowInteractor>::New(); iren->SetRenderWindow(renWin); // Add the actors to the renderer, set the background and size // ren1->AddActor(glyph3DActor1); ren1->AddActor(glyph3DActor2); // Generate an interesting view // ren1->ResetCamera(); ren1->GetActiveCamera()->Azimuth(120); ren1->GetActiveCamera()->Elevation(30); ren1->GetActiveCamera()->Dolly(1.5); ren1->ResetCameraClippingRange(); iren->Initialize(); iren->Start(); return EXIT_SUCCESS; } static vtkSmartPointer<vtkPolyData> ReadPolyData(const char *fileName) { vtkSmartPointer<vtkPolyData> polyData; std::string extension = vtksys::SystemTools::GetFilenameExtension(std::string(fileName)); if (extension == ".ply") { vtkSmartPointer<vtkPLYReader> reader = vtkSmartPointer<vtkPLYReader>::New(); reader->SetFileName (fileName); reader->Update(); polyData = reader->GetOutput(); } else if (extension == ".vtp") { vtkSmartPointer<vtkXMLPolyDataReader> reader = vtkSmartPointer<vtkXMLPolyDataReader>::New(); reader->SetFileName (fileName); reader->Update(); polyData = reader->GetOutput(); } else if (extension == ".obj") { vtkSmartPointer<vtkOBJReader> reader = vtkSmartPointer<vtkOBJReader>::New(); reader->SetFileName (fileName); reader->Update(); polyData = reader->GetOutput(); } else if (extension == ".stl") { vtkSmartPointer<vtkSTLReader> reader = vtkSmartPointer<vtkSTLReader>::New(); reader->SetFileName (fileName); reader->Update(); polyData = reader->GetOutput(); } else { vtkSmartPointer<vtkPointSource> points = vtkSmartPointer<vtkPointSource>::New(); points->SetNumberOfPoints(10000); points->SetRadius(10.0); points->SetCenter(vtkMath::Random(-100, 100), vtkMath::Random(-100, 100), vtkMath::Random(-100, 100)); points->SetDistributionToShell(); points->Update(); polyData = points->GetOutput(); } return polyData; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(RadiusOutlierRemoval) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(RadiusOutlierRemoval MACOSX_BUNDLE RadiusOutlierRemoval.cxx) target_link_libraries(RadiusOutlierRemoval ${VTK_LIBRARIES})
Download and Build RadiusOutlierRemoval¶
Danger
The generation of tar files has not been ported to the new VTKExamples. Some tarballs may be missing or out-of-date.
Click here to download RadiusOutlierRemoval and its CMakeLists.txt file. Once the tarball RadiusOutlierRemoval.tar has been downloaded and extracted,
cd RadiusOutlierRemoval/build
If VTK is installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
Build the project:
make
and run it:
./RadiusOutlierRemoval
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.