Pirobot is a robot prototype which can focus on a ball of a specific color until it gets it and then concentrates on a second ball.
In the video below, Pirobot only sees the green ball; it follows it with its eyes (with its camera) until it can finally hold it in its hands.
Immediately afterwar
This is a companion discussion topic for the original entry at https://community.robotshop.com/blog/show/pirobot-can-track-and-capture-balls