Speed Estimation of Tennis Ball

[https://www.youtube.com/watch?v=AORG9W-41z4](https://www.youtube.com/watch?v=AORG9W-41z4)

I have a requirement to estimate the speed of tennis ball from the right or left netpost angle, I unfortunately do not have the 3D coordinates but I have the bounding box and human coordinates.

The approach I was using to estimate was to pick any 2 frames after which the ball was hit to get the distance travelled by the ball and divide it by the timestamp this will give me in pixels/sec

I have the coordinates of …

box computervision human speed tennis