Optical tracking based on 2 or more cameras

Question

open source

Hello.
Situation:
There is a man in the room, he has a light bulb on his head. The person can walk around the room. I need to determine the coordinates of the light bulb in space at each moment of time. The number of video cameras is not limited, but of course, the fewer the better.
There are commercial solutions, they do not suit me because they are too expensive.
I really don’t want to write it myself because it’s long and difficult.
The searches have unfortunately yielded very deplorable results, so far I have found only this one from the free one: https://github.com/MarcusRobbins/Free3DTrack
Question:
can you tell me open source solutions to this problem?
Thanks in advance.

Answer 1

Using opencv, this is written quite quickly and cheaply. Two or three cameras will be enough. The main points are to determine the coordinates of the object in the camera coordinate system (for example, by color), and then translate into the desired ones. You can see an example of solving a similar problem in my article .