技術標籤：VTKDICOMC++

原文章中編譯和執行結果不正確，修改了一些，VTK/8.2.0下驗證過。

#include <vtkSmartPointer.h>
#include <vtkDICOMImageReader.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkCellPicker.h>
#include <vtkImagePlaneWidget.h>
#include <vtkMarchingCubes.h>
#include <vtkImageCast.h>
#include <vtkSmartVolumeMapper.h>
#include <vtkVolumeProperty.h>
#include <vtkVolume.h>
#include <vtkPiecewiseFunction.h>
#include <vtkColorTransferFunction.h>
#include <vtkGPUVolumeRayCastMapper.h>
#include <vtkImageMapToColors.h>
#include <vtkProperty.h>
#include <vtkImageActor.h>
#include <vtkImageData.h>
#include <vtkAutoInit.h>
VTK_MODULE_INIT(vtkInteractionStyle);
VTK_MODULE_INIT(vtkRenderingFreeType);
VTK_MODULE_INIT(vtkRenderingOpenGL2)
VTK_MODULE_INIT(vtkRenderingVolumeOpenGL2)

int main(int argc, char* argv[])
{

    std::string folder = "dcm_folder";


    //read all the dicom files with the received path.
    vtkSmartPointer<vtkDICOMImageReader> reader = vtkSmartPointer<vtkDICOMImageReader>::New();
    reader->SetDirectoryName(folder.c_str());
    reader->Update();

    int imageDims[3];
    reader->GetOutput()->GetDimensions(imageDims); //need include <vtkimagedata.h>
    cout << "dimension[] :" << imageDims[0] << " " << imageDims[1] << " " << imageDims[2] << endl;

    vtkSmartPointer<vtkImageCast> cast = vtkSmartPointer<vtkImageCast>::New();
    cast->SetInputData((vtkDataObject*)reader->GetOutput());
    //cast->SetOutputScalarTypeToFloat();
    cast->Update();

    //**********************************************************************
    vtkSmartPointer<vtkGPUVolumeRayCastMapper> volumeMapperGpu = vtkSmartPointer<vtkGPUVolumeRayCastMapper>::New();
    //基於GPU加速的光線投射體繪製演算法
    volumeMapperGpu->SetInputData(cast->GetOutput());
    volumeMapperGpu->SetImageSampleDistance(1.);  //0.5 ==> 1.0
    volumeMapperGpu->SetSampleDistance(1.0);
    volumeMapperGpu->SetAutoAdjustSampleDistances(1);

    //***********************************************************************
    vtkSmartPointer<vtkVolumeProperty> volumeProperty = vtkSmartPointer<vtkVolumeProperty>::New();//定義物件屬性
    volumeProperty->SetInterpolationTypeToLinear();
    volumeProperty->ShadeOn();
    volumeProperty->SetAmbient(0.4); //0.4
    volumeProperty->SetDiffuse(0.5);
    volumeProperty->SetSpecular(0.1);

    vtkSmartPointer<vtkPiecewiseFunction> compositeOpacity = vtkSmartPointer<vtkPiecewiseFunction>::New();
    //Defines a piecewise function mapping.
    compositeOpacity->AddPoint(60, 0.00);
    compositeOpacity->AddPoint(140, 0.40);
    compositeOpacity->AddPoint(180, 0.90);


    volumeProperty->SetScalarOpacity(compositeOpacity);

    vtkSmartPointer<vtkColorTransferFunction> color = vtkSmartPointer<vtkColorTransferFunction>::New();
    color->AddRGBPoint(0, 0, 0, 0);
    color->AddRGBPoint(64, 1, 0.52, 0.30);
    color->AddRGBPoint(190.0, 1, 1, 1);
    color->AddRGBPoint(220, 0.2, 0.2, 0.2);

    volumeProperty->SetColor(color);

    vtkSmartPointer<vtkVolume> volume = vtkSmartPointer<vtkVolume>::New();
    //represents a volume(data & properties) in a rendered scene
    volume->SetMapper(volumeMapperGpu);
    volume->SetProperty(volumeProperty);

    vtkSmartPointer<vtkRenderer> rendererVolume = vtkSmartPointer<vtkRenderer>::New();
    vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New();
    vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New();

    rendererVolume->AddVolume(volume);
    renderWindow->AddRenderer(rendererVolume);
    renderWindowInteractor->SetRenderWindow(renderWindow);

    renderWindow->Render();
    renderWindowInteractor->Start();

    return 0;
}
 

參考：

https://blog.csdn.net/sinat_21597219/article/details/86510756