ImageContinuousErode3D
VTKExamples/Cxx/Images/ImageContinuousErode3D
Code¶
ImageContinuousErode3D.cxx
#include <vtkVersion.h> #include <vtkSmartPointer.h> #include <vtkProperty.h> #include <vtkImageData.h> #include <vtkImageCanvasSource2D.h> #include <vtkImageContinuousErode3D.h> #include <vtkPNGReader.h> #include <vtkActor.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkRenderer.h> #include <vtkDataSetMapper.h> int main(int argc, char *argv[]) { vtkSmartPointer<vtkImageData> image = vtkSmartPointer<vtkImageData>::New(); if(argc < 2) { // Create an image vtkSmartPointer<vtkImageCanvasSource2D> source = vtkSmartPointer<vtkImageCanvasSource2D>::New(); source->SetScalarTypeToUnsignedChar(); source->SetExtent(0, 200, 0, 200, 0, 0); source->SetDrawColor(0,0,0); source->FillBox(0,200,0,200); source->SetDrawColor(255,0,0); source->FillBox(100,150,100,150); source->Update(); image->ShallowCopy(source->GetOutput()); } else { vtkSmartPointer<vtkPNGReader> reader = vtkSmartPointer<vtkPNGReader>::New(); reader->SetFileName(argv[1]); reader->Update(); image->ShallowCopy(reader->GetOutput()); } vtkSmartPointer<vtkImageContinuousErode3D> erodeFilter = vtkSmartPointer<vtkImageContinuousErode3D>::New(); #if VTK_MAJOR_VERSION <= 5 erodeFilter->SetInputConnection(image->GetProducerPort()); #else erodeFilter->SetInputData(image); #endif erodeFilter->SetKernelSize(10,10,1); erodeFilter->Update(); vtkSmartPointer<vtkDataSetMapper> originalMapper = vtkSmartPointer<vtkDataSetMapper>::New(); #if VTK_MAJOR_VERSION <= 5 originalMapper->SetInputConnection(image->GetProducerPort()); #else originalMapper->SetInputData(image); #endif originalMapper->Update(); vtkSmartPointer<vtkActor> originalActor = vtkSmartPointer<vtkActor>::New(); originalActor->SetMapper(originalMapper); vtkSmartPointer<vtkDataSetMapper> erodedMapper = vtkSmartPointer<vtkDataSetMapper>::New(); erodedMapper->SetInputConnection(erodeFilter->GetOutputPort()); erodedMapper->Update(); vtkSmartPointer<vtkActor> erodedActor = vtkSmartPointer<vtkActor>::New(); erodedActor->SetMapper(erodedMapper); // Visualize double leftViewport[4] = {0.0, 0.0, 0.5, 1.0}; double rightViewport[4] = {0.5, 0.0, 1.0, 1.0}; vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->SetSize(600, 300); vtkSmartPointer<vtkRenderWindowInteractor> interactor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); interactor->SetRenderWindow(renderWindow); vtkSmartPointer<vtkRenderer> leftRenderer = vtkSmartPointer<vtkRenderer>::New(); renderWindow->AddRenderer(leftRenderer); leftRenderer->SetViewport(leftViewport); leftRenderer->SetBackground(.6, .5, .4); vtkSmartPointer<vtkRenderer> rightRenderer = vtkSmartPointer<vtkRenderer>::New(); renderWindow->AddRenderer(rightRenderer); rightRenderer->SetViewport(rightViewport); rightRenderer->SetBackground(.4, .5, .6); leftRenderer->AddActor(originalActor); rightRenderer->AddActor(erodedActor); leftRenderer->ResetCamera(); rightRenderer->SetActiveCamera(leftRenderer->GetActiveCamera()); renderWindow->Render(); interactor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(ImageContinuousErode3D) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(ImageContinuousErode3D MACOSX_BUNDLE ImageContinuousErode3D.cxx) target_link_libraries(ImageContinuousErode3D ${VTK_LIBRARIES})
Download and Build ImageContinuousErode3D¶
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 ImageContinuousErode3D and its CMakeLists.txt file. Once the tarball ImageContinuousErode3D.tar has been downloaded and extracted,
cd ImageContinuousErode3D/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:
./ImageContinuousErode3D
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.