ITK/Examples/ImageProcessing/MultiplyImageFilter
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MultiplyImageFilter.cxx
<source lang="cpp">
- include "itkImage.h"
- include "itkImageFileWriter.h"
- include "itkRescaleIntensityImageFilter.h"
- include "itkMultiplyImageFilter.h"
- include "itkImageToVTKImageFilter.h"
- include "vtkImageViewer.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::MultiplyImageFilter <ImageType, ImageType > MultiplyImageFilterType;
MultiplyImageFilterType::Pointer multiplyFilter = MultiplyImageFilterType::New (); multiplyFilter->SetInput1(image1); multiplyFilter->SetInput2(image2); multiplyFilter->Update();
// Visualize first image typedef itk::ImageToVTKImageFilter<ImageType> ConnectorType; ConnectorType::Pointer connector1 = ConnectorType::New(); connector1->SetInput(image1);
vtkSmartPointer<vtkImageActor> actor1 = vtkSmartPointer<vtkImageActor>::New(); actor1->SetInput(connector1->GetOutput());
// Visualize first image typedef itk::ImageToVTKImageFilter<ImageType> ConnectorType; ConnectorType::Pointer connector2 = ConnectorType::New(); connector2->SetInput(image2);
vtkSmartPointer<vtkImageActor> actor2 = vtkSmartPointer<vtkImageActor>::New(); actor2->SetInput(connector2->GetOutput());
// Visualize joined image ConnectorType::Pointer multiplyConnector = ConnectorType::New(); multiplyConnector->SetInput(multiplyFilter->GetOutput());
vtkSmartPointer<vtkImageActor> multiplyActor = vtkSmartPointer<vtkImageActor>::New(); multiplyActor->SetInput(multiplyConnector->GetOutput());
// 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(multiplyActor);
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
<source lang="cmake"> cmake_minimum_required(VERSION 2.6)
PROJECT(MultiplyImageFilter)
include_directories(/home/doriad/src/ITK/Wrapping/WrapITK/ExternalProjects/ItkVtkGlue/src/)
FIND_PACKAGE(VTK REQUIRED) INCLUDE(${VTK_USE_FILE})
FIND_PACKAGE(ITK REQUIRED) INCLUDE(${ITK_USE_FILE})
ADD_EXECUTABLE(MultiplyImageFilter MultiplyImageFilter.cxx) TARGET_LINK_LIBRARIES(MultiplyImageFilter vtkHybrid ITKBasicFilters ITKCommon ITKIO) </source>