I was looking for some software for tracking objects such as pedestrians, bicycles or cars from simple undistorted videos for academic research , until I found Mocha. I tried Mocha trail version and tracked a vehicle for 300 frames, at frame 200 I export trajectory data, at this frame I change spline and also planner surface and tracked the car until frame 300. then I export trajectory data again and see trajectories from 0 to 200 all have changed!!, why all previous corner pin coordinates change when modifying planer surface in a specific frame?
Because the surface tool follows the track, it is not actually the tracking data it’s the way the data exports. If you change what the surface tool is doing, the four corner pin points will change with your movement for the entirety of the track.