chipbreak87 (4/11/2021)
It's an old program nobody really uses any more, but the idea is you import front and side, and tell the software where the corresponding points are. Nose front, Nose side, Corner lip front, corner lip side, etc... and then the program generates a mesh from that.
That is the way it used to work in iClone, and the results were inferior to what can be accomplished with Head Shot. It gives you a superior base that can be worked on further.