VTK/Examples/Cxx/Images/ImageDilateErode3D
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Jump to navigationJump to searchThis example reads in a binary image and dilates one value and erodes another (morphological operations).
Contents
ImageDilateErode3D.cxx
#include <vtkImageActor.h>
#include <vtkImageCast.h>
#include <vtkInteractorStyleImage.h>
#include <vtkImageAccumulate.h>
#include <vtkImageData.h>
#include <vtkImageMapper3D.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkSmartPointer.h>
#include <vtkPNGReader.h>
#include <vtkImageDilateErode3D.h>
#include <vtkImageThreshold.h>
int main(int argc, char *argv[])
{
// Handle the arguments
if( argc < 2 )
{
std::cout << "Required arguments: filename.png" << std::endl;
return EXIT_FAILURE;
}
// Read the image
vtkSmartPointer<vtkPNGReader> reader =
vtkSmartPointer<vtkPNGReader>::New();
reader->SetFileName(argv[1]);
reader->Update();
vtkSmartPointer<vtkImageDilateErode3D> dilateErode =
vtkSmartPointer<vtkImageDilateErode3D>::New();
dilateErode->SetInputConnection(reader->GetOutputPort());
dilateErode->SetDilateValue(0);
dilateErode->SetErodeValue(255);
dilateErode->SetKernelSize(5, 5, 3);
dilateErode->ReleaseDataFlagOff();
vtkSmartPointer<vtkImageActor> originalActor =
vtkSmartPointer<vtkImageActor>::New();
originalActor->GetMapper()->SetInputConnection(reader->GetOutputPort());
vtkSmartPointer<vtkImageActor> openCloseActor =
vtkSmartPointer<vtkImageActor>::New();
openCloseActor->GetMapper()->SetInputConnection(dilateErode->GetOutputPort());
// Define viewport ranges
// (xmin, ymin, xmax, ymax)
double originalViewport[4] = {0.0, 0.0, 0.5, 1.0};
double openCloseViewport[4] = {0.5, 0.0, 1.0, 1.0};
// Setup renderers
vtkSmartPointer<vtkRenderer> originalRenderer =
vtkSmartPointer<vtkRenderer>::New();
originalRenderer->SetViewport(originalViewport);
originalRenderer->AddActor(originalActor);
originalRenderer->ResetCamera();
originalRenderer->SetBackground(.4, .5, .6);
vtkSmartPointer<vtkRenderer> dilateErodeRenderer =
vtkSmartPointer<vtkRenderer>::New();
dilateErodeRenderer->SetViewport(openCloseViewport);
dilateErodeRenderer->AddActor(openCloseActor);
dilateErodeRenderer->ResetCamera();
dilateErodeRenderer->SetBackground(.4, .5, .7);
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->SetSize(600, 300);
renderWindow->AddRenderer(originalRenderer);
renderWindow->AddRenderer(dilateErodeRenderer);
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
vtkSmartPointer<vtkInteractorStyleImage> style =
vtkSmartPointer<vtkInteractorStyleImage>::New();
renderWindowInteractor->SetInteractorStyle(style);
renderWindowInteractor->SetRenderWindow(renderWindow);
renderWindowInteractor->Initialize();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
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CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(ImageDilateErode3D)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(ImageDilateErode3D MACOSX_BUNDLE ImageDilateErode3D.cxx)
if(VTK_LIBRARIES)
target_link_libraries(ImageDilateErode3D ${VTK_LIBRARIES})
else()
target_link_libraries(ImageDilateErode3D vtkHybrid vtkWidgets)
endif()
Download and Build ImageDilateErode3D
Click here to download ImageDilateErode3D. and its CMakeLists.txt file.
Once the tarball ImageDilateErode3D.tar has been downloaded and extracted,
cd ImageDilateErode3D/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:
./ImageDilateErode3D
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.