Have I Been Here Before? A Method for Detecting Loop Closure With LiDAR
ARMY RESEARCH LAB ADELPHI MD COMPUTATIONAL AND INFORMATION SCIENCES DIRECTORATE
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Loop closure detection has progressed to operate in real time in areas as massive as an entire city. This impressive result is enabled by the richness and uniqueness of visual stimuli in a city. If a robot were required instead to operate in a deep underground complex of tunnels that is absent of unique features, then a new set of tools is needed to enable a similar level of performance. We present a unified representation for recognizing global loop closure, which incorporates appearance- and spatial-based techniques on a mobile robot system, which has the unfortunate task of exploring a system of austere underground tunnels with only a laser scanner as a guide.