RadiusOutlierRemoval
VTKEx/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.
Question
If you have a simple question about this example contact us at VTKExProject If your question is more complex and may require extended discussion, please use the VTK Discourse Forum
Code¶
RadiusOutlierRemoval.cxx
#include <vtkSmartPointer.h>
#include <vtkRadiusOutlierRemoval.h>
#include <vtkBYUReader.h>
#include <vtkPLYReader.h>
#include <vtkXMLPolyDataReader.h>
#include <vtkPolyDataReader.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();
renWin->Render();
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 == ".vtk")
{
vtkSmartPointer<vtkPolyDataReader> reader =
vtkSmartPointer<vtkPolyDataReader>::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 if (extension == ".g")
{
vtkSmartPointer<vtkBYUReader> reader =
vtkSmartPointer<vtkBYUReader>::New();
reader->SetGeometryFileName (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 3.3 FATAL_ERROR)
project(RadiusOutlierRemoval)
find_package(VTK COMPONENTS
vtkvtkCommonCore
vtkvtkFiltersCore
vtkvtkFiltersPoints
vtkvtkFiltersSources
vtkvtkIOGeometry
vtkvtkIOLegacy
vtkvtkIOPLY
vtkvtkIOXML
vtkvtkInteractionStyle
vtkvtkRenderingContextOpenGL2
vtkvtkRenderingCore
vtkvtkRenderingFreeType
vtkvtkRenderingGL2PSOpenGL2
vtkvtkRenderingOpenGL2 QUIET)
if (NOT VTK_FOUND)
message("Skipping RadiusOutlierRemoval: ${VTK_NOT_FOUND_MESSAGE}")
return ()
endif()
message (STATUS "VTK_VERSION: ${VTK_VERSION}")
if (VTK_VERSION VERSION_LESS "8.90.0")
# old system
include(${VTK_USE_FILE})
add_executable(RadiusOutlierRemoval MACOSX_BUNDLE RadiusOutlierRemoval.cxx )
target_link_libraries(RadiusOutlierRemoval PRIVATE ${VTK_LIBRARIES})
else ()
# include all components
add_executable(RadiusOutlierRemoval MACOSX_BUNDLE RadiusOutlierRemoval.cxx )
target_link_libraries(RadiusOutlierRemoval PRIVATE ${VTK_LIBRARIES})
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS RadiusOutlierRemoval
MODULES ${VTK_LIBRARIES}
)
endif ()
Download and Build RadiusOutlierRemoval¶
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
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.