Terrain traversability analysis for off-road robots using time-of-flight 3d sensing

In this paper we present a terrain traversability analysis methodology which classifies all image pixels in the TOF image as traversable or not, by estimating for each pixel a traversability score which is based upon the analysis of the 3D (depth data) and 2D (IR data) content of the TOF camera data. This classification result is then used for the (semi) – autonomous navigation of two robotic systems, operating in extreme environments: a search and rescue robot and a humanitarian demining robot. Integrated in autonomous robot control architecture, terrain traversability classification increases the environmental situational awareness and enables a mobile robot to navigate (semi) – autonomously in an unstructured dynamical outdoor environment.