How is ball speed calculated in PB Vision?

• Ball speed is calculated in a few steps. First our system identifies a shot and creates a trajectory based on the flight of the ball. Each shot has a point of impact and an end point (bounce or volley). Our system calculates the time it takes for the ball to travel from point A to point B on the trajectory and calculates the speed based on the distance travelled and the time of flight.

Are ball speeds calculated at the highest speed reached during flight / at paddle contact? Or are they the average velocity of the ball from paddle contact to bounce?

• Speed is calculated with the average velocity along a trajectory path.