How to set Window Width/Window Centers with vtkImageActor (or vtkActor)?

问题

I want to set Windows Width/ Windows Center value when use vtkImageActor/vtkActor. But I could not find the way to solve it. (If I use vtkActor2d, it's okay, but I don't want to use it)

回答1:

Attach a vtkWindowLevelLookupTable to your mapper.

Basic Example:

vtkSmartPointer<vtkWindowLevelLookupTable> myLookupTable = 
vtkSmartPointer<vtkWindowLevelLookupTable>::New();

double WindowWidth = myImageReader->GetOutput()->GetScalarRange()[1] -
                 myImageReader->GetOutput()->GetScalarRange()[0];
double WindowLevel = (myImageReader->GetOutput()->GetScalarRange()[1] +
                  myImageReader->GetOutput()->GetScalarRange()[0]) / 2.0;

myLookupTable->SetWindow(WindowWidth);
myLookupTable->SetLevel(WindowLevel);
myMapper->SetLookupTable(myLookupTable);

来源：https://stackoverflow.com/questions/33011167/how-to-set-window-width-window-centers-with-vtkimageactor-or-vtkactor