vtk二维图像三维显示，Z轴表示灰度

#include "vtkImageDataGeometryFilter.h"

#include "vtkWarpScalar.h"

#include "vtkDICOMImageReader.h"

#include "vtkImageData.h"

#include "vtkRenderWindow.h"

#include "vtkRenderer.h"

#include "vtkPolyDataMapper.h"

#include "vtkRenderWindowInteractor.h"

#include "vtkSmartPointer.h"

#include "vtkActor.h"

int main(int, char *[])

{

vtkSmartPointer<vtkDICOMImageReader> dicomReader = vtkSmartPointer<vtkDICOMImageReader>::New();

vtkSmartPointer<vtkImageData> imageData = vtkSmartPointer<vtkImageData>::New();

dicomReader->SetFileName("D:\\Ducments\\VS2008\\FrameClickColor -1\\CT.1.2.840.113619.2.108.3994723703.8049.1137556649.531.dcm");

dicomReader->Update();

imageData = dicomReader->GetOutput();

vtkSmartPointer<vtkImageDataGeometryFilter> filter = vtkSmartPointer<vtkImageDataGeometryFilter>::New();

filter->SetInput(imageData);

vtkSmartPointer<vtkWarpScalar> rape = vtkSmartPointer<vtkWarpScalar>::New();

rape->SetInput(filter->GetOutput());

rape->SetScaleFactor(0.5);

vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New();

vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();

mapper->SetInput(rape->GetPolyDataOutput());

mapper->SetScalarRange(imageData->GetScalarRange());

  actor->SetMapper(mapper);

vtkSmartPointer<vtkRenderWindow> rewin = vtkSmartPointer<vtkRenderWindow>::New();

vtkSmartPointer<vtkRenderer> render = vtkSmartPointer<vtkRenderer>::New();

vtkSmartPointer<vtkRenderWindowInteractor> iren = vtkSmartPointer<vtkRenderWindowInteractor>::New();

rewin->AddRenderer(render);

render->AddActor(actor);

iren->SetRenderWindow(rewin);

iren->Initialize();

iren->Start();

}