A Practical Zoom Camera Calibration Technique: An Application on Active Vison for Human-Robot Interaction

Abstract

Knowing where a person is looking at and understanding the user’s head gestures provide an effective and safe means to communicate with a robot. This type of human-robot interaction becomes even more effective when the vision system implemented simulates a human vision system enhanced by a pair of zoom cameras. But before zoom cameras can be effectively used, they are beset by a tedious and time-consuming calibration procedure. In this paper, we present a practical zoom camera calibration technique that is simple and can be effectively used not only for enhancing active vision systems but also for many other applications.