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 <vtkImageGaussianSmooth.h>
8 #include <vtkRenderWindow.h>
9 #include <vtkRenderWindowInteractor.h>
10 #include <vtkInteractorStyleImage.h>
11 #include <vtkRenderer.h>
12 #include <vtkImageActor.h>
13 #include <vtkImageEllipsoidSource.h>
14 #include <vtkImageCast.h>
15 #include <vtkJPEGReader.h>
16
17 //测试图像：../data/lena-gray.jpg
18 int main(int argc, char* argv[])
19 {
20 vtkSmartPointer<vtkJPEGReader> reader =
21 vtkSmartPointer<vtkJPEGReader>::New();
22 reader->SetFileName("lena-gray.jpg");
23 reader->Update();
24
25 vtkSmartPointer<vtkImageGaussianSmooth> gaussianSmoothFilter =
26 vtkSmartPointer<vtkImageGaussianSmooth>::New();
27 gaussianSmoothFilter->SetInputConnection(reader->GetOutputPort());
28 gaussianSmoothFilter->SetDimensionality(2);
29 gaussianSmoothFilter->SetRadiusFactor(5);
30 gaussianSmoothFilter->SetStandardDeviation(3);
31 gaussianSmoothFilter->Update();
32
33 vtkSmartPointer<vtkImageActor> originalActor =
34 vtkSmartPointer<vtkImageActor>::New();
35 originalActor->SetInputData(reader->GetOutput());
36
37 vtkSmartPointer<vtkImageActor> smoothedActor =
38 vtkSmartPointer<vtkImageActor>::New();
39 smoothedActor->SetInputData(gaussianSmoothFilter->GetOutput());
40
41 double originalViewport[4] = {0.0, 0.0, 0.5, 1.0};
42 double smoothedViewport[4] = {0.5, 0.0, 1.0, 1.0};
43
44 vtkSmartPointer<vtkRenderer> originalRenderer =
45 vtkSmartPointer<vtkRenderer>::New();
46 originalRenderer->SetViewport(originalViewport);
47 originalRenderer->AddActor(originalActor);
48 originalRenderer->ResetCamera();
49 originalRenderer->SetBackground(1.0, 1.0, 1.0);
50
51 vtkSmartPointer<vtkRenderer> gradientMagnitudeRenderer =
52 vtkSmartPointer<vtkRenderer>::New();
53 gradientMagnitudeRenderer->SetViewport(smoothedViewport);
54 gradientMagnitudeRenderer->AddActor(smoothedActor);
55 gradientMagnitudeRenderer->ResetCamera();
56 gradientMagnitudeRenderer->SetBackground(1.0, 1.0, 1.0);
57
58 vtkSmartPointer<vtkRenderWindow> renderWindow =
59 vtkSmartPointer<vtkRenderWindow>::New();
60 renderWindow->AddRenderer(originalRenderer);
61 renderWindow->AddRenderer(gradientMagnitudeRenderer);
62 renderWindow->SetSize(640, 320);
63 renderWindow->Render();
64 renderWindow->SetWindowName("GaussianFilterExample");
65
66 vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
67 vtkSmartPointer<vtkRenderWindowInteractor>::New();
68 vtkSmartPointer<vtkInteractorStyleImage> style =
69 vtkSmartPointer<vtkInteractorStyleImage>::New();
70
71 renderWindowInteractor->SetInteractorStyle(style);
72 renderWindowInteractor->SetRenderWindow(renderWindow);
73 renderWindowInteractor->Initialize();
74 renderWindowInteractor->Start();
75
76 return EXIT_SUCCESS;
77 }
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