Need help, vision system for robot?

Okay, so I am building a robot for school, and basically all I need is a program that can download frames from a camera analyze them and see a "path".

I will be using a vehicle that kids drive in (like when they are toddlers) and I am going to need to know wtf I need to do... ANY help would be lovely, thanks <3

>>8
How many years ago did you do it?

I did 2004 and 2005, and iirc in '05 the big new thing was the camera. My team also had a compass and some sort of wheel rotation sensor on each wheel, I forget what exactly.

I also remember that at one competition we were the only robot to even touch the harder autonomous objective. But that was mostly accident.