Let's assume we have series of frames with a known object. I want to track the object using Kalman filter using constant velocity / acceleration models. My questions are:
(i) Which model to use? CV or CA? (ii) If I use CV, how to calculate velocity of object? and what is the unit of velocity? pixels/sec or m/s? (iii) If I use CA, how do we evaluate velocity and acceleration of the object? (iv) If object moves closer to camera, it drastically shifts in both x and y pixels. How do we accommodate this change? CV and CA models fail.