VTK 实例37：梯度算子（边缘检测）

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 <vtkRenderWindoh> 8 #include <vtkRenderWindowInteractor.h> 9 #include <vtkInteractorStyleImage.h> 10 #include <vtkRenderer.h> 11 #include <vtkImageActor.h> 12 #include <vtkJPEGReader.h> 13 #include <vtkImageGradient.h> 14 #include <vtkImageMagnitude.h> 15 #include <vtkImageCast.h> 16 #include <vtkImageShiftScale.h> 17 18 //测试图像：../data/lenagray.jpg 19 int main(int argc, char* argv[]) 20 ; 55 double gradviewport[4] = ; 56 57 vtkSmartPointer<vtkRenderer> originalRenderer = 58 vtkSmartPointer<vtkRenderer>::New(); 59 originalRenderer>SetViewport(originalViewport); 60 originalRenderer>AddActor(originalActor); 61 originalRenderer>ResetCamera(); 62 originalRenderer>SetBackground(1.0, 1.0, 1.0); 64 vtkSmartPointer<vtkRenderer> gradRenderer = 65 vtkSmartPointer<vtkRenderer>::New(); 66 gradRenderer>SetViewport(gradviewport); 67 gradRenderer>AddActor(gradActor); 68 gradRenderer>ResetCamera(); 69 gradRenderer>SetBackground(1.0, 1.0, 1.0); 70 71 vtkSmartPointer<vtkRenderWindow> renderWindow = 72 vtkSmartPointer<vtkRenderWindow>::New(); 73 renderWindow>AddRenderer(originalRenderer); 74 renderWindow>AddRenderer(gradRenderer); 75 renderWindow>SetSize( 640, 320 ); 76 renderWindow>Render(); 77 renderWindow>SetWindowName("ImageGradientExample"); 78 79 vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = 80 vtkSmartPointer<vtkRenderWindowInteractor>::New(); 81 vtkSmartPointer<vtkInteractorStyleImage> style = 82 vtkSmartPointer<vtkInteractorStyleImage>::New(); 83 84 renderWindowInteractor>SetInteractorStyle(style); 85 renderWindowInteractor>SetRenderWindow(renderWindow); 86 renderWindowInteractor>Initialize(); 87 renderWindowInteractor>Start(); 88 89 return EXIT_SUCCESS; 90 }

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