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| ==ConvertPixelBuffer.cxx== | | {{warning|1=The media wiki content on this page is no longer maintained. The examples presented on the https://itk.org/Wiki/* pages likely require ITK version 4.13 or earlier releases. In many cases, the examples on this page no longer conform to the best practices for modern ITK versions. |
| <source lang="cpp">
| | }} |
| #include "itkImage.h"
| |
| #include "itkImageFileWriter.h"
| |
| #include "itkConvertPixelBuffer.h"
| |
| #include "itkDefaultConvertPixelTraits.h"
| |
| | |
| #include <itkImageToVTKImageFilter.h>
| |
| | |
| #include "vtkImageViewer.h"
| |
| #include "vtkRenderWindowInteractor.h"
| |
| #include "vtkSmartPointer.h"
| |
| #include "vtkImageActor.h"
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| #include "vtkInteractorStyleImage.h"
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| #include "vtkRenderer.h"
| |
| | |
| typedef itk::Image<unsigned char, 2> ScalarImageType;
| |
| typedef itk::Image<itk::Vector<unsigned char, 3>, 2> ColorImageType;
| |
| | |
| static void CreateImage(ColorImageType::Pointer image);
| |
| | |
| int main(int, char *[])
| |
| {
| |
| ColorImageType::Pointer image = ColorImageType::New();
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| CreateImage(image);
| |
| | |
| typedef itk::ConvertPixelBuffer<ColorImageType, ScalarImageType, itk::DefaultConvertPixelTraits< ScalarImageType::PixelType > >
| |
| ConvertFilterType;
| |
| | |
| ScalarImageType::Pointer scalarImage = ScalarImageType::New();
| |
| ConvertFilterType::ConvertRGBToGray(image->GetBufferPointer(), scalarImage->GetBufferPointer(),
| |
| scalarImage->GetLargestPossibleRegion().GetSize()[0]*scalarImage->GetLargestPossibleRegion().GetSize()[1]);
| |
| | |
| // Visualize first image
| |
| typedef itk::ImageToVTKImageFilter<ColorImageType> ColorConnectorType;
| |
| ColorConnectorType::Pointer connector = ColorConnectorType::New();
| |
| connector->SetInput(image);
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| | |
| vtkSmartPointer<vtkImageActor> actor =
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| vtkSmartPointer<vtkImageActor>::New();
| |
| actor->SetInput(connector->GetOutput());
| |
| | |
| // Visualize flipped image
| |
| typedef itk::ImageToVTKImageFilter<ScalarImageType> ScalarConnectorType;
| |
| ScalarConnectorType::Pointer grayscaleConnector = ScalarConnectorType::New();
| |
| grayscaleConnector->SetInput(scalarImage);
| |
| | |
| vtkSmartPointer<vtkImageActor> grayscaleActor =
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| vtkSmartPointer<vtkImageActor>::New();
| |
| grayscaleActor->SetInput(grayscaleConnector->GetOutput());
| |
| | |
| // There will be one render window
| |
| vtkSmartPointer<vtkRenderWindow> renderWindow =
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| vtkSmartPointer<vtkRenderWindow>::New();
| |
| renderWindow->SetSize(600, 300);
| |
| | |
| vtkSmartPointer<vtkRenderWindowInteractor> interactor =
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| 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();
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| renderWindow->AddRenderer(rightRenderer);
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| rightRenderer->SetViewport(rightViewport);
| |
| rightRenderer->SetBackground(.4, .5, .6);
| |
| | |
| // Add the sphere to the left and the cube to the right
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| leftRenderer->AddActor(actor);
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| rightRenderer->AddActor(grayscaleActor);
| |
| | |
| leftRenderer->ResetCamera();
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| rightRenderer->ResetCamera();
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| | |
| renderWindow->Render();
| |
| | |
| vtkSmartPointer<vtkInteractorStyleImage> style =
| |
| vtkSmartPointer<vtkInteractorStyleImage>::New();
| |
| interactor->SetInteractorStyle(style);
| |
| | |
| interactor->Start();
| |
| | |
| return EXIT_SUCCESS;
| |
| }
| |
| | |
| void CreateImage(ColorImageType::Pointer image)
| |
| {
| |
| // Create an image with 2 connected components
| |
| ColorImageType::RegionType region;
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| ColorImageType::IndexType start;
| |
| start[0] = 0;
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| start[1] = 0;
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| | |
| ColorImageType::SizeType size;
| |
| unsigned int NumRows = 200;
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| unsigned int NumCols = 300;
| |
| size[0] = NumRows;
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| size[1] = NumCols;
| |
| | |
| region.SetSize(size);
| |
| region.SetIndex(start);
| |
| | |
| image->SetRegions(region);
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| image->Allocate();
| |
| | |
| // Make a square
| |
| for(unsigned int r = 20; r < 80; r++)
| |
| {
| |
| for(unsigned int c = 20; c < 80; c++)
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| {
| |
| ColorImageType::IndexType pixelIndex;
| |
| pixelIndex[0] = r;
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| pixelIndex[1] = c;
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| ColorImageType::PixelType pixel;
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| pixel[0] = 150;
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| pixel[1] = 0;
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| pixel[2] = 0;
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| image->SetPixel(pixelIndex, pixel);
| |
| }
| |
| }
| |
| }
| |
| | |
| </source>
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| | |
| {{ITKVTKCMakeLists|ConvertPixelBuffer|}}
| |
