VTK 实例20：用vtkImageViewer2显示三维医学图像mhd的某个切面

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

#include <vtkSmartPointer.h>
#include <vtkImageViewer2.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkMetaImageReader.h>//mhd类图像处理类

//测试图像：../data/brain.mhd
int main(int argc, char* argv[])
{
    vtkSmartPointer<vtkMetaImageReader> reader =
        vtkSmartPointer<vtkMetaImageReader>::New();
    //注意：mhd和raw文件要放在同一个文件目录
    reader->SetFileName("C:\\Users\\Administrator\\Desktop\\VTK2\\hellovtk\\vtk_图像处理学习\\第五章_图像处理\\data\\brain.mhd");
    reader->Update();

    vtkSmartPointer<vtkImageViewer2> imageViewer =
        vtkSmartPointer<vtkImageViewer2>::New();
    imageViewer->SetInputData(reader->GetOutput());

    vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
        vtkSmartPointer<vtkRenderWindowInteractor>::New();
    imageViewer->SetupInteractor(renderWindowInteractor);

    imageViewer->SetColorLevel(500);//设置窗位为500
    imageViewer->SetColorWindow(2000);//设置窗宽为2000
    imageViewer->SetSlice(40);//设置切片索引
    imageViewer->SetSliceOrientationToXY();//设置切片方向
    imageViewer->Render();

    imageViewer->GetRenderer()->SetBackground(1.0, 1.0, 1.0);
    imageViewer->SetSize(640, 480);
    imageViewer->GetRenderWindow()->SetWindowName("DisplayImageExample");

    renderWindowInteractor->Start();

    return EXIT_SUCCESS;
}