I have been working on new module.
It is called Flow. Like https://en.wikipedia.org/wiki/Optical_flow
Using OpenCV and web camera it is able to extract vectors describing motion.
Can someone test if it works at all? 
https://github.com/diimdeep/DSW-Vision/releases/download/2.0alpha1/DSW-Vision-Flow.alpha1.zip (macOS only!)
Warning. Early alpha, expect memory leaks, crashes.