Event Location: NSH 1507

Abstract: In this talk, I will present a method to reconstruct an articulated trajectory in 3D given the 2D projection of the articulated trajectory, the 3D parent trajectory, and the camera pose at each time instant. This is a core challenge in reconstructing the 3D motion of articulated structures such as the human body. We simultaneously apply activity-independent spatial and temporal constraints, in the form of fixed 3D distance to the parent trajectory and smooth 3D motion. There exist two solutions that satisfy each instantaneous 2D projection and articulation constraint and we show that resolving this ambiguity by enforcing smoothness is equivalent to solving a binary quadratic programming problem.