VTK 实例14：读取DCM医学图像并显示

#include "vtkAutoInit.h" 
VTK_MODULE_INIT(vtkRenderingOpenGL2);
VTK_MODULE_INIT(vtkInteractionStyle);

#include <vtkDICOMImageReader.h>//DCM医学文件读取类
#include <vtkImageViewer.h>//显示2D图像类
#include <vtkRenderWindowInteractor.h>//交互器类

int main()
{
    int dim[2];
    //实例化一个对象dcmReader
    vtkDICOMImageReader* dcmReader = vtkDICOMImageReader::New();
    dcmReader->SetFileName("C:\\Users\\Administrator\\Desktop\\VTK2\\hellovtk\\CT\\123.dcm");//读单张切片
    //reader->SetDirectoryName("C:\\Users\\Administrator\\Desktop\\VTK2\\hellovtk\\CT_all");//读序列切片
    
    //实例化一个对象dcmViewer
    vtkImageViewer* dcmViewer = vtkImageViewer::New();
    dcmViewer->SetInputConnection(dcmReader->GetOutputPort());//读取的图像数据输出给显示对象输入
    //dcmViewer->SetColorLevel(400);//设置窗位   
    //dcmViewer->SetColorWindow(800);//设置窗宽  
    dim[0] = dcmViewer->GetColorLevel();//显示窗位1000   
    dim[1] = dcmViewer->GetColorWindow();//显示窗宽2000
    printf("%d   %d", dim[0], dim[1]);

    dcmViewer->Render();//显示图像

    //加入交互机制
    //实例化一个交互器对象interactor
    vtkRenderWindowInteractor* interactor = vtkRenderWindowInteractor::New();
    dcmViewer->SetupInteractor(interactor);
    interactor->Initialize();
    interactor->Start();//使交互器处于等待状态

    /*getchar();*/
    //释放内存
    dcmReader->Delete();
    dcmViewer->Delete();
    interactor->Delete();

    return 0;

}

鼠标左键按住不放，上下移动调整窗位，左右移动调整窗宽

 默认窗位1000，窗宽2000