Is there a simple way to track the motions of a single entity in a webcam feed? For example, I imagine a "hello world" app with an index finger used as mouse pointer.
I realize there s still a lot of basic research in this area, so it might be too early to expect an easy to use, generic abstraction.
For the sake of completeness, I ve seen some related but lower-level (and non-Python) projects being mentioned, including AForge, WiimoteLib and an article on motion detection algorithms.