ITK  5.0.0
Insight Segmentation and Registration Toolkit
WikiExamples/ImageProcessing/PermuteAxesImageFilter.cxx
#include "itkImage.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"
using ImageType = itk::Image<unsigned char, 2>;
static void CreateImage(ImageType::Pointer image);
int main(int, char *[])
{
ImageType::Pointer image = ImageType::New();
CreateImage(image);
using PermuteAxesImageFilterType = itk::PermuteAxesImageFilter <ImageType>;
order[0] = 1;
order[1] = 0;
PermuteAxesImageFilterType::Pointer permuteAxesFilter
= PermuteAxesImageFilterType::New();
permuteAxesFilter->SetInput(image);
permuteAxesFilter->SetOrder(order);
permuteAxesFilter->Update();
// Visualize first image
ConnectorType::Pointer originalConnector = ConnectorType::New();
originalConnector->SetInput(image);
vtkSmartPointer<vtkImageActor> originalActor =
vtkSmartPointer<vtkImageActor>::New();
#if VTK_MAJOR_VERSION <= 5
originalActor->SetInput(originalConnector->GetOutput());
#else
originalConnector->Update();
originalActor->GetMapper()->SetInputData(originalConnector->GetOutput());
#endif
// Visualize permuted image
ConnectorType::Pointer permutedConnector = ConnectorType::New();
permutedConnector->SetInput(permuteAxesFilter->GetOutput());
vtkSmartPointer<vtkImageActor> permutedActor =
vtkSmartPointer<vtkImageActor>::New();
#if VTK_MAJOR_VERSION <= 5
permutedActor->SetInput(permutedConnector->GetOutput());
#else
permutedConnector->Update();
permutedActor->GetMapper()->SetInputData(permutedConnector->GetOutput());
#endif
// There will be one render window
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->SetSize(600, 300);
vtkSmartPointer<vtkRenderWindowInteractor> interactor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
interactor->SetRenderWindow(renderWindow);
// Define viewport ranges
// (xmin, ymin, xmax, ymax)
double leftViewport[4] = {0.0, 0.0, 0.5, 1.0};
double rightViewport[4] = {0.5, 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> 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(originalActor);
rightRenderer->AddActor(permutedActor);
leftRenderer->ResetCamera();
rightRenderer->ResetCamera();
renderWindow->Render();
vtkSmartPointer<vtkInteractorStyleImage> style =
vtkSmartPointer<vtkInteractorStyleImage>::New();
interactor->SetInteractorStyle(style);
interactor->Start();
return EXIT_SUCCESS;
}
void CreateImage(ImageType::Pointer image)
{
// Create an image with 2 connected components
start[0] = 0;
start[1] = 0;
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 < 30; c++)
{
pixelIndex[0] = r;
pixelIndex[1] = c;
image->SetPixel(pixelIndex, 200);
}
}
}