Estimation problems from 2D to 3D

Hi,

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As part of converting tennis from 2D to 3D we have to draw out ball trajectories. Currently I am mapping ball to a 2D court like this (using perspective transform from tennis court to the image), and by calculating the bounce point I am trying to create 3D trajectories.

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https://reddit.com/link/1bmjlrz/video/kgr8c6gcz9qc1/player

However, the problem is apparent from the player's serve. Whenever the ball goes up in height, the model thinks the ball has gone ahead in court since …

computervision court however image mapping part perspective tennis