开源库:VTK9.3.0
开发工具:Visual Studio2017
开发语言:C++
实现过程:
cpp
void initImageActor(double* Matrix, double* center, vtkSmartPointer<vtkImageCast> pImageCast,
vtkSmartPointer<vtkImageReslice> imageReslice, vtkSmartPointer<vtkImageActor> actor)
{
vtkSmartPointer<vtkMatrix4x4> AxialResliceMatrix = vtkSmartPointer<vtkMatrix4x4>::New();
AxialResliceMatrix->DeepCopy(Matrix);
AxialResliceMatrix->SetElement(0, 3, center[0]);
AxialResliceMatrix->SetElement(1, 3, center[1]);
AxialResliceMatrix->SetElement(2, 3, center[2]);
imageReslice->SetInputConnection(pImageCast->GetOutputPort());
imageReslice->SetOutputDimensionality(2);
imageReslice->SetResliceAxes(AxialResliceMatrix);
imageReslice->SetInterpolationModeToLinear();
imageReslice->Update();
actor->GetMapper()->SetInputConnection(imageReslice->GetOutputPort());
actor->SetPosition(0, 0, 0);
}
int main()
{
vtkSmartPointer<vtkImageReslice> pImageResliceX = vtkSmartPointer<vtkImageReslice>::New();
vtkSmartPointer<vtkImageReslice> pImageResliceY = vtkSmartPointer<vtkImageReslice>::New();
vtkSmartPointer<vtkImageReslice> pImageResliceZ = vtkSmartPointer<vtkImageReslice>::New();
vtkSmartPointer<vtkDICOMImageReader> reader = vtkSmartPointer<vtkDICOMImageReader>::New();
reader->SetDirectoryName("D:\\image\\images\\CT\\20200115"); //dicom文件目录
reader->Update();
int extent[6];
double spacing[3];
double origin[3];
reader->GetOutput()->GetExtent(extent);
reader->GetOutput()->GetSpacing(spacing);
reader->GetOutput()->GetOrigin(origin);
double center[3];
center[0] = origin[0] + spacing[0] * 0.5 * (extent[0] + extent[1]);
center[1] = origin[1] + spacing[1] * 0.5 * (extent[2] + extent[3]);
center[2] = origin[2] + spacing[2] * 0.5 * (extent[4] + extent[5]);
double Axial[16] = {
1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 0,
0, 0, 0, 1 };
double Coronal[16] = {
1, 0, 0, 0,
0, 0, -1, 0,
0, 1, 0, 0,
0, 0, 0, 1 };
double Sagittal[16] = {
0, 0, 1, 0,
1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 0, 1 };
vtkSmartPointer<vtkImageCast> pImageCast = vtkSmartPointer<vtkImageCast>::New();
pImageCast->SetInputConnection(reader->GetOutputPort());
pImageCast->SetOutputScalarTypeToUnsignedChar();
pImageCast->ClampOverflowOn();
pImageCast->Update();
vtkSmartPointer<vtkImageActor> pImageActorX = vtkSmartPointer<vtkImageActor>::New();
vtkSmartPointer<vtkImageActor> pImageActorY = vtkSmartPointer<vtkImageActor>::New();
vtkSmartPointer<vtkImageActor> pImageActorZ = vtkSmartPointer<vtkImageActor>::New();
initImageActor(Axial, center, pImageCast, pImageResliceX, pImageActorX);
initImageActor(Coronal, center, pImageCast, pImageResliceY, pImageActorY);
initImageActor(Sagittal, center, pImageCast, pImageResliceZ, pImageActorZ);
vtkSmartPointer<vtkRenderer> pRendererX = vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderer> pRendererY = vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderer> pRendererZ = vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderer> pRenderer = vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> pRenderWindow = vtkSmartPointer<vtkRenderWindow>::New();
pRendererX->AddActor(pImageActorX);
pRendererY->AddActor(pImageActorY);
pRendererZ->AddActor(pImageActorZ);
pRendererX->SetBackground(0, 0, 0);
pRendererY->SetBackground(0, 0, 0);
pRendererZ->SetBackground(0, 0, 0);
pRenderer->SetBackground(0.1, 0.2, 0.4);
double ltView[4] = { 0, 0, 0.5, 0.5 };
double rtView[4] = { 0.5, 0, 1, 0.5 };
double lbView[4] = { 0, 0.5, 0.5, 1 };
double rbView[4] = { 0.5, 0.5, 1, 1 };
pRenderer->SetViewport(rtView);
pRendererX->SetViewport(lbView);
pRendererY->SetViewport(rbView);
pRendererZ->SetViewport(ltView);
pRenderWindow->AddRenderer(pRendererX);
pRenderWindow->AddRenderer(pRendererY);
pRenderWindow->AddRenderer(pRendererZ);
pRenderWindow->AddRenderer(pRenderer);
vtkSmartPointer<vtkRenderWindowInteractor> pRenderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
pRenderWindow->SetSize(600, 600);
vtkSmartPointer<vtkInteractorStyleImage> imagestyle = vtkSmartPointer<vtkInteractorStyleImage>::New();
pRenderWindowInteractor->SetInteractorStyle(imagestyle);
pRenderWindowInteractor->SetRenderWindow(pRenderWindow);
pRenderWindowInteractor->Initialize();
pRenderWindow->Render();
pRenderWindowInteractor->Initialize();
pRenderWindowInteractor->Start();
return 0;
}
运行结果: