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 <vtkRenderWindow.h>
8 #include <vtkRenderWindowInteractor.h>
9 #include <vtkInteractorStyleImage.h>
10 #include <vtkRenderer.h>
11 #include <vtkImageActor.h>
12 #include <vtkJPEGReader.h>
13 #include <vtkImageThreshold.h>
14 #include <vtkImageCast.h>
15
16 //测试图像：../data/lena-gray.jpg
17 int main(int argc, char* argv[])
18 {
19 vtkSmartPointer<vtkJPEGReader> reader =
20 vtkSmartPointer<vtkJPEGReader>::New();
21 reader->SetFileName("lena-gray.jpg");
22 reader->Update();
23
24 vtkSmartPointer<vtkImageThreshold> thresholdFilter =
25 vtkSmartPointer<vtkImageThreshold>::New();
26 thresholdFilter->SetInputConnection(reader->GetOutputPort());
27 thresholdFilter->ThresholdByUpper(100);//设置阈值为100
28 thresholdFilter->SetInValue(255);//大于100的设置为255
29 thresholdFilter->SetOutValue(0);//小于100的设置为0
30 thresholdFilter->Update();//算法执行后必须添加更新消息
31
32 vtkSmartPointer<vtkImageActor> originalActor =
33 vtkSmartPointer<vtkImageActor>::New();
34 originalActor->SetInputData(reader->GetOutput());
35
36 vtkSmartPointer<vtkImageActor> binaryActor =
37 vtkSmartPointer<vtkImageActor>::New();
38 binaryActor->SetInputData(thresholdFilter->GetOutput());
39
40 double originalViewport[4] = {0.0, 0.0, 0.5, 1.0};
41 double binaryviewport[4] = {0.5, 0.0, 1.0, 1.0};
42
43 vtkSmartPointer<vtkRenderer> originalRenderer =
44 vtkSmartPointer<vtkRenderer>::New();
45 originalRenderer->SetViewport(originalViewport);
46 originalRenderer->AddActor(originalActor);
47 originalRenderer->ResetCamera();
48 originalRenderer->SetBackground(1.0, 1.0, 1.0);
49
50 vtkSmartPointer<vtkRenderer> binaryRenderer =
51 vtkSmartPointer<vtkRenderer>::New();
52 binaryRenderer->SetViewport(binaryviewport);
53 binaryRenderer->AddActor(binaryActor);
54 binaryRenderer->ResetCamera();
55 binaryRenderer->SetBackground(1.0, 1.0, 1.0);
56
57 vtkSmartPointer<vtkRenderWindow> renderWindow =
58 vtkSmartPointer<vtkRenderWindow>::New();
59 renderWindow->AddRenderer(originalRenderer);
60 renderWindow->AddRenderer(binaryRenderer);
61 renderWindow->SetSize(640, 320);
62 renderWindow->Render();
63 renderWindow->SetWindowName("ImageBinaryExample");
64
65 vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
66 vtkSmartPointer<vtkRenderWindowInteractor>::New();
67 vtkSmartPointer<vtkInteractorStyleImage> style =
68 vtkSmartPointer<vtkInteractorStyleImage>::New();
69
70 renderWindowInteractor->SetInteractorStyle(style);
71 renderWindowInteractor->SetRenderWindow(renderWindow);
72 renderWindowInteractor->Initialize();
73 renderWindowInteractor->Start();
74
75 return EXIT_SUCCESS;
76 }
