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
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.