Robot Navigation Based on Neurosymbolic Reasoning over Landmarks

In this paper a neurosymbolic hybrid system for robot self localisation is proposed. This crucial issue in autonomous robotic research field has been tackled with slightly different approaches depending mainly on robot sensors and actuation devices, its available computational resources, and the environment in which it acts. The system we present has been designed for robot endowed with poor sensors (a 16 element sonar array, a camera just performing very light computation, odometric sensors) which acts in an office-like environment. In the proposed landmark based approach, we considered as "natural" environmental features the corners formed by walls intersections and corners formed by doors present in the scene. The whole problem, from landmark recognition to position estimation, is carried out by a unified neurosymbolic system.