Using convex hull to segment the sky. Detecting the balls using contour size. jugglegram/nhttps://github.com/smeschke/juggling/blob/master/convexHull_previous_points.py
https://www.kickstarter.com/projects/jonudry/jon-udrys-abc-tour <-- Please read all the info on the KS page.
Down To Brizzness is at http://juggling.tv/16144