ITK/Examples/ImageProcessing/AddImageFilter: Difference between revisions
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#include <itkImageToVTKImageFilter.h> | #include <itkImageToVTKImageFilter.h> | ||
#include "vtkVersion.h" | |||
#include "vtkImageViewer.h" | #include "vtkImageViewer.h" | ||
#include "vtkImageMapper3D.h" | #include "vtkImageMapper3D.h" |
Revision as of 13:09, 11 May 2012
AddImageFilter.cxx
<source lang="cpp">
- include "itkImage.h"
- include "itkRescaleIntensityImageFilter.h"
- include "itkAddImageFilter.h"
- include <itkImageToVTKImageFilter.h>
- include "vtkVersion.h"
- include "vtkImageViewer.h"
- include "vtkImageMapper3D.h"
- include "vtkRenderWindowInteractor.h"
- include "vtkSmartPointer.h"
- include "vtkImageActor.h"
- include "vtkInteractorStyleImage.h"
- include "vtkRenderer.h"
typedef itk::Image<unsigned char, 2> ImageType;
static void CreateImage1(ImageType::Pointer image); static void CreateImage2(ImageType::Pointer image);
int main(int, char *[]) {
ImageType::Pointer image1 = ImageType::New(); CreateImage1(image1);
ImageType::Pointer image2 = ImageType::New(); CreateImage2(image2);
typedef itk::AddImageFilter <ImageType, ImageType > AddImageFilterType;
AddImageFilterType::Pointer addFilter = AddImageFilterType::New (); addFilter->SetInput1(image1); addFilter->SetInput2(image2); addFilter->Update();
// Visualize first image typedef itk::ImageToVTKImageFilter<ImageType> ConnectorType; ConnectorType::Pointer connector1 = ConnectorType::New(); connector1->SetInput(image1);
vtkSmartPointer<vtkImageActor> actor1 = vtkSmartPointer<vtkImageActor>::New();
- if VTK_MAJOR_VERSION <= 5
actor1->SetInput(connector1->GetOutput());
- else
connector1->Update(); actor1->GetMapper()->SetInputData(connector1->GetOutput());
- endif
// Visualize first image typedef itk::ImageToVTKImageFilter<ImageType> ConnectorType; ConnectorType::Pointer connector2 = ConnectorType::New(); connector2->SetInput(image2);
vtkSmartPointer<vtkImageActor> actor2 = vtkSmartPointer<vtkImageActor>::New();
- if VTK_MAJOR_VERSION <= 5
actor2->SetInput(connector2->GetOutput());
- else
connector2->Update(); actor2->GetMapper()->SetInputData(connector2->GetOutput());
- endif
// Visualize joined image ConnectorType::Pointer addConnector = ConnectorType::New(); addConnector->SetInput(addFilter->GetOutput());
vtkSmartPointer<vtkImageActor> addActor = vtkSmartPointer<vtkImageActor>::New();
- if VTK_MAJOR_VERSION <= 5
addActor->SetInput(addConnector->GetOutput());
- else
addConnector->Update(); addActor->GetMapper()->SetInputData(addConnector->GetOutput());
- endif
// There will be one render window vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->SetSize(900, 300);
vtkSmartPointer<vtkRenderWindowInteractor> interactor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); interactor->SetRenderWindow(renderWindow);
// Define viewport ranges // (xmin, ymin, xmax, ymax) double leftViewport[4] = {0.0, 0.0, 0.33, 1.0}; double centerViewport[4] = {0.33, 0.0, 0.66, 1.0}; double rightViewport[4] = {0.66, 0.0, 1.0, 1.0};
// Setup both renderers vtkSmartPointer<vtkRenderer> leftRenderer = vtkSmartPointer<vtkRenderer>::New(); renderWindow->AddRenderer(leftRenderer); leftRenderer->SetViewport(leftViewport); leftRenderer->SetBackground(.6, .5, .4);
vtkSmartPointer<vtkRenderer> centerRenderer = vtkSmartPointer<vtkRenderer>::New(); renderWindow->AddRenderer(centerRenderer); centerRenderer->SetViewport(centerViewport); centerRenderer->SetBackground(.4, .5, .6); vtkSmartPointer<vtkRenderer> rightRenderer = vtkSmartPointer<vtkRenderer>::New(); renderWindow->AddRenderer(rightRenderer); rightRenderer->SetViewport(rightViewport); rightRenderer->SetBackground(.4, .5, .6);
// Add the sphere to the left and the cube to the right leftRenderer->AddActor(actor1); centerRenderer->AddActor(actor2); rightRenderer->AddActor(addActor);
leftRenderer->ResetCamera(); centerRenderer->ResetCamera(); rightRenderer->ResetCamera();
renderWindow->Render();
vtkSmartPointer<vtkInteractorStyleImage> style = vtkSmartPointer<vtkInteractorStyleImage>::New(); interactor->SetInteractorStyle(style);
interactor->Start();
return EXIT_SUCCESS;
}
void CreateImage1(ImageType::Pointer image) {
// Create an image with 2 connected components ImageType::RegionType region; ImageType::IndexType start; start[0] = 0; start[1] = 0;
ImageType::SizeType size; unsigned int NumRows = 200; unsigned int NumCols = 300; size[0] = NumRows; size[1] = NumCols;
region.SetSize(size); region.SetIndex(start);
image->SetRegions(region); image->Allocate();
// Make a square for(unsigned int r = 20; r < 80; r++) { for(unsigned int c = 20; c < 80; c++) { ImageType::IndexType pixelIndex; pixelIndex[0] = r; pixelIndex[1] = c;
image->SetPixel(pixelIndex, 15); } }
}
void CreateImage2(ImageType::Pointer image)
{
// Create an image with 2 connected components ImageType::RegionType region; ImageType::IndexType start; start[0] = 0; start[1] = 0;
ImageType::SizeType size; unsigned int NumRows = 200; unsigned int NumCols = 300; size[0] = NumRows; size[1] = NumCols;
region.SetSize(size); region.SetIndex(start);
image->SetRegions(region); image->Allocate();
// Make another square for(unsigned int r = 40; r < 100; r++) { for(unsigned int c = 40; c < 100; c++) { ImageType::IndexType pixelIndex; pixelIndex[0] = r; pixelIndex[1] = c;
image->SetPixel(pixelIndex, 15); } }
} </source>
CMakeLists.txt
<syntaxhighlight lang="cmake"> cmake_minimum_required(VERSION 3.9.5)
project(AddImageFilter)
find_package(ITK REQUIRED) include(${ITK_USE_FILE}) if (ITKVtkGlue_LOADED)
find_package(VTK REQUIRED) include(${VTK_USE_FILE})
else()
find_package(ItkVtkGlue REQUIRED) include(${ItkVtkGlue_USE_FILE}) set(Glue ItkVtkGlue)
endif()
add_executable(AddImageFilter MACOSX_BUNDLE AddImageFilter.cxx) target_link_libraries(AddImageFilter
${Glue} ${VTK_LIBRARIES} ${ITK_LIBRARIES})
</syntaxhighlight>
Download and Build AddImageFilter
Click here to download AddImageFilter. and its CMakeLists.txt file. Once the tarball AddImageFilter.tar has been downloaded and extracted,
cd AddImageFilter/build
- If ITK is installed:
cmake ..
- If ITK is not installed but compiled on your system, you will need to specify the path to your ITK build:
cmake -DITK_DIR:PATH=/home/me/itk_build ..
Build the project,
make
and run it:
./AddImageFilter
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK and ITK bin directories to your path. This will resolve the VTK and ITK dll's at run time.
Building All of the Examples
Many of the examples in the ITK Wiki Examples Collection require VTK. You can build all of the the examples by following these instructions. If you are a new VTK user, you may want to try the Superbuild which will build a proper ITK and VTK.
ItkVtkGlue
ITK >= 4
For examples that use QuickView (which depends on VTK), you must have built ITK with Module_ITKVtkGlue=ON.
ITK < 4
Some of the ITK Examples require VTK to display the images. If you download the entire ITK Wiki Examples Collection, the ItkVtkGlue directory will be included and configured. If you wish to just build a few examples, then you will need to download ItkVtkGlue and build it. When you run cmake it will ask you to specify the location of the ItkVtkGlue binary directory.