private void Form1_Load(object sender, EventArgs e)
        {
　　　　　　  //創建數據讀取對象
            vtkDICOMImageReader reader = new vtkDICOMImageReader();

            //小端位元組
            reader.SetDataByteOrderToLittleEndian();

            //設置切片數據路徑
            reader.SetDirectoryName(@"C:\Users\Administrator\Desktop\vtk\801");

            vtkImageShrink3D shrink = new vtkImageShrink3D();

            shrink.SetShrinkFactors(4, 4, 1);

            shrink.AveragingOn();

            shrink.SetInput((vtkDataObject)(reader.GetOutput()));


            //提取等值面
            vtkMarchingCubes skinExtractor = new vtkMarchingCubes();

            //建立算法對象，從CT切片數據中提取出皮膚
            skinExtractor.SetValue(0, 50); //提取出CT值為50的組織

            skinExtractor.SetInputConnection(shrink.GetOutputPort());

            vtkDecimatePro deci = new vtkDecimatePro(); 
            deci.SetTargetReduction(0.3);

            deci.SetInputConnection(skinExtractor.GetOutputPort());

            vtkSmoothPolyDataFilter smooth = new vtkSmoothPolyDataFilter();  //光滑圖像

            smooth.SetInputConnection(deci.GetOutputPort());

            smooth.SetNumberOfIterations(200);

            vtkPolyDataNormals skinNormals = new vtkPolyDataNormals();  //法線

            skinNormals.SetInputConnection(smooth.GetOutputPort());

            skinNormals.SetFeatureAngle(60.0);

            vtkStripper stripper = new vtkStripper();  

            stripper.SetInputConnection(skinNormals.GetOutputPort());

            vtkDataSetMapper skinMapper = new vtkDataSetMapper(); 
            skinMapper.SetInput(stripper.GetOutput());

            skinMapper.ScalarVisibilityOff();


            //設置相機
            vtkCamera aCamera = new vtkCamera();

            aCamera.SetViewUp(0, 0, -1);

            aCamera.SetPosition(0, 1, 0);

            aCamera.SetFocalPoint(0, 0, 0);

            aCamera.ComputeViewPlaneNormal();


            //設置Actor
            vtkActor coneActor = new vtkActor();

            coneActor.SetMapper(skinMapper);

            coneActor.GetProperty().SetAmbient(0.5);

            coneActor.GetProperty().SetDiffuse(1);

            coneActor.GetProperty().SetSpecular(0.6);

            //顯示類
            vtkRenderer renderer = renderWindowControl1.RenderWindow.GetRenderers().GetFirstRenderer();

            renderer.AddActor(coneActor);//添加coneActor對象

            //renderer.AddActor2D(new vtkProp());//添加textActor對象

            renderer.SetBackground(0, 0, 0);

            renderer.SetActiveCamera(aCamera);//添加相機

            renderer.ResetCamera();

            vtkRenderWindow renWin = renderWindowControl1.RenderWindow;//設置繪圖窗口renWin->AddRenderer(renderer);//裝載繪圖類

            vtkWin32RenderWindowInteractor iren = new vtkWin32RenderWindowInteractor();

            iren.SetRenderWindow(renWin);//裝載繪圖窗口

        }

 //建立算法對象，從CT切片數據中提取出皮膚
skinExtractor.SetValue(0, 250); //血管CT值為200-300左右