<title>Geometric model for camera-based object tracking</title>

Abstract

A geometric model for object tracking with a camera located on a two degrees of freedom (pan-tilt) robotic head is presented. Pan-tilt angles are computed from the projections of the moving target on the image plane. First it is shown that this is an open problem. An approximated geometric model is proposed to solve it. A study of the approximation error, and the results of its implementation in a commercial robotic head are also described.