Divergent stereo in autonomous navigation: From bees to robots

摘要

This article presents some experiments of a real-time navigation system driven by two cameras pointing laterally to the navigation direction (Divergent Stereo). Similarly to what has been proposed in (Franceschini et al. 1991; Coombs and Roberts 1992), our approach (Sandini et al. 1992; Santos-Victor et al. 1993) assumes that, for navigation purposes, the driving information is not distance (as it is obtainable by a stereo setup) but motion and, more precisely, by the use of qualitative optical-flow information computed over nonoverlapping areas of the visual field of two cameras.