How to use the vtkFrenetSerretFrame to make a dental panorama, also known as CPR?

Hello every one,
This is my first post on this forum, Hope you guys can give me some advice,
Below are my questions here
I was refer to VTK Journal --A Spline-Driven Image Slicer wish to implement Dental panorama Image, also known as CPR? with C++ VTK + QT, and I was plugin vtkFrenetSerretFrame function to calculate FSTangents and FSNormal polylines but in next step ,how can I calculate and generate the Dental panorama Image? Please anyone with relevant experience give me some advice, thanks a lot