Occupant Body Imaging based on Occupancy Grid Mapping

This paper presents vehicle occupant body imaging algorithms for detecting the presence of children that are left behind in vehicles. The proposed algorithms utilize occupancy grid mapping (OGM) techniques developed for autonomous driving, which are modified for in-cabin human detection purposes. Two different kinds of OGM techniques are presented to deal with two major difficulties in imaging the occupant bodies in an in-cabin environment. The processing flows of the proposed algorithms are detailed in this report. Two experimental results for 60 GHz millimeter-wave radars are also presented for performance verification.