ImageAnisotropicDiffusion2D
VTKExamples/Cxx/Images/ImageAnisotropicDiffusion2D
Code¶
ImageAnisotropicDiffusion2D.cxx
#include <vtkSmartPointer.h> #include <vtkCamera.h> #include <vtkImageMapper3D.h> #include <vtkImageActor.h> #include <vtkImageAnisotropicDiffusion2D.h> #include <vtkImageCast.h> #include <vtkImageData.h> #include <vtkImageMandelbrotSource.h> #include <vtkInteractorStyleImage.h> #include <vtkJPEGReader.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkRenderer.h> int main(int argc, char *argv[]) { // Handle the arguments if(argc < 2) { std::cout << "Usage: " << argv[0] << " filename.png [iterations(10)] [threshold(20)]" << std::endl; return EXIT_FAILURE; } int iterations = 10; if (argc >= 3) { iterations = atoi(argv[2]); } float threshold = 20; if (argc >= 4) { threshold = atoi(argv[3]); } // Read the image vtkSmartPointer<vtkJPEGReader> reader = vtkSmartPointer<vtkJPEGReader>::New(); reader->SetFileName(argv[1]); vtkSmartPointer<vtkImageAnisotropicDiffusion2D> diffusion = vtkSmartPointer<vtkImageAnisotropicDiffusion2D>::New(); diffusion->SetInputConnection(reader->GetOutputPort()); diffusion->SetNumberOfIterations(iterations); diffusion->SetDiffusionThreshold(threshold); diffusion->Update(); // Create an actor vtkSmartPointer<vtkImageActor> originalActor = vtkSmartPointer<vtkImageActor>::New(); originalActor->GetMapper()->SetInputConnection(reader->GetOutputPort()); // Create an actor vtkSmartPointer<vtkImageActor> diffusionActor = vtkSmartPointer<vtkImageActor>::New(); diffusionActor->GetMapper()->SetInputConnection(diffusion->GetOutputPort()); // Define viewport ranges // (xmin, ymin, xmax, ymax) double leftViewport[4] = {0.0, 0.0, 0.5, 1.0}; double rightViewport[4] = {0.5, 0.0, 1.0, 1.0}; // Setup renderers vtkSmartPointer<vtkCamera> camera = vtkSmartPointer<vtkCamera>::New(); vtkSmartPointer<vtkRenderer> leftRenderer = vtkSmartPointer<vtkRenderer>::New(); leftRenderer->SetViewport(leftViewport); leftRenderer->AddActor(originalActor); leftRenderer->SetActiveCamera(camera); leftRenderer->ResetCamera(); vtkSmartPointer<vtkRenderer> rightRenderer = vtkSmartPointer<vtkRenderer>::New(); rightRenderer->SetViewport(rightViewport); rightRenderer->AddActor(diffusionActor); rightRenderer->SetActiveCamera(camera); // Setup render window vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->SetSize(600,300); renderWindow->AddRenderer(leftRenderer); renderWindow->AddRenderer(rightRenderer); // Setup render window interactor vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); vtkSmartPointer<vtkInteractorStyleImage> style = vtkSmartPointer<vtkInteractorStyleImage>::New(); renderWindowInteractor->SetInteractorStyle(style); // Render and start interaction renderWindowInteractor->SetRenderWindow(renderWindow); renderWindowInteractor->Initialize(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(ImageAnisotropicDiffusion2D) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(ImageAnisotropicDiffusion2D MACOSX_BUNDLE ImageAnisotropicDiffusion2D.cxx) target_link_libraries(ImageAnisotropicDiffusion2D ${VTK_LIBRARIES})
Download and Build ImageAnisotropicDiffusion2D¶
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Click here to download ImageAnisotropicDiffusion2D and its CMakeLists.txt file. Once the tarball ImageAnisotropicDiffusion2D.tar has been downloaded and extracted,
cd ImageAnisotropicDiffusion2D/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:
./ImageAnisotropicDiffusion2D
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.