Motion and structure from orthographic projections
Thomas S. Huang, C.H. Lee · 2003
The authors review S. Ullman's (1979) results on deriving motion and structure from orthographic views. They present two further results: they show that two orthographic views allow an unresolvably infinite number of solutions for the motion/structure of a rigid body; and they give a linear algorithm for solving for motion/structure from four-point correspondences over the views.>