3DEqualizer4 [guide] - LSF 1- & 2-point solve object tracking strategies

• LSF solves can use any combination of the seven degrees of freedom ( tx,ty,tz,rx,ry,rz, focal length) enabled/disabled • For this eyeball object track demo we will demonstrate one point and two point solves • Many gimbal lock problems, or more accurately rotation channel “cross talk“ issues, are solved by using the Zero CameraPG tool • These issues arise because LSF always solves in Global space, not local or child space • A three rotation channel object solve requires at least two Survey points • When all three LSF rotations are unconstrained to calculate a solve, then the solve will probably not suffer cross talk • A two rotation object channel solve only requires a single Survey point • But if the camera has any rotations, bad cross talk can occur. But the Zero Cam PG tool usually solves the problem • The more trans/rot channels that are enabled for LSF solve, the more Survey points areneeded. • When LSF solving translations for an Object, it is also oft