Marking @Doug_H's answer as correct as it was helpful. Extra info for those that may also have this issue. The Action and Vision example app worked with beta6, a fresh download (don't know if they had updated it) and some code tweaks (namely the epsilon error). After getting the the Action and Vision app to work, plotting their ROI shows that it is only a window, and likely by setting the trajectory ROI to the entire screen in my app was causing issues. Making my ROI a window similar to the A&V app gets results. If you are looking for a trajectory of something rolling/moving closely to the ground, I found that having the camera setup higher than expected increases performance (from chest to eye level seems best). Understanding the UIView coordinates vs camera orientation was also an issue I had.