How to learn how to trace a golf swing?

I want to learn how to use computer vision for golf related things, such as measuring angles of things (like the angles of my shoulders relative to the ground), tracing the ball and my swing path, etc. for fun. I realize this kind of software either 1) already exists and/or 2) is extremely difficult to do correctly but I think it'd be fun to work on this.

For something like this, should I start with something like a class or …

computervision golf