VTK 实例32：图像重采样（降采样）

1 #include "vtkAutoInit.h" 2 VTK_MODULE_INIT(vtkRenderingOpenGL2); 3 VTK_MODULE_INIT(vtkInteractionStyle); 4 5 #include <vtkSmartPointer.h> 6 #include <vtkImageData.h> 7 #include <vtkImageShiftScale.h> 8 #include <vtkRenderWindoh> 9 #include <vtkRenderWindowInteractor.h> 10 #include <vtkInteractorStyleImage.h> 11 #include <vtkRenderer.h> 12 #include <vtkImageActor.h> 13 #include <vtkBMPReader.h> 14 #include <vtkImageShrink3D.h> 15 16 //测试图像：../data/lena.bmp 17 int main(int argc, char* argv[]) 18 ; 56 double shrinkViewport[4] = ; 57 58 vtkSmartPointer<vtkRenderer> originalRenderer = 59 vtkSmartPointer<vtkRenderer>::New(); 60 originalRenderer>SetViewport(originalViewport); 61 originalRenderer>AddActor(originalActor); 62 originalRenderer>ResetCamera(); originalRenderer>SetBackground(1.0, 1.0, 1.0); 64 65 vtkSmartPointer<vtkRenderer> shrinkRenderer = 66 vtkSmartPointer<vtkRenderer>::New(); 67 shrinkRenderer>SetViewport(shrinkViewport); 68 shrinkRenderer>AddActor(shrinkActor); 69 shrinkRenderer>ResetCamera(); 70 shrinkRenderer>SetBackground(1.0, 1.0, 1.0); 71 72 vtkSmartPointer<vtkRenderWindow> renderWindow = 73 vtkSmartPointer<vtkRenderWindow>::New(); 74 renderWindow>AddRenderer(originalRenderer); 75 renderWindow>AddRenderer(shrinkRenderer); 76 renderWindow>SetSize(640, 480); 77 renderWindow>Render(); 78 renderWindow>SetWindowName("ImageShrink3DExample"); 79 80 vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = 81 vtkSmartPointer<vtkRenderWindowInteractor>::New(); 82 vtkSmartPointer<vtkInteractorStyleImage> style = 83 vtkSmartPointer<vtkInteractorStyleImage>::New(); 84 85 renderWindowInteractor>SetInteractorStyle(style); 86 renderWindowInteractor>SetRenderWindow(renderWindow); 87 renderWindowInteractor>Initialize(); 88 renderWindowInteractor>Start(); 89 90 return EXIT_SUCCESS; 91 }

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