X-MAS: Extremely Large-Scale Multi-Modal Sensor Dataset for Outdoor Surveillance in Real Environments. - DongKi Noh 001; Changki Sung; Teayoung Uhm; Wooju Lee; Hyungtae Lim; Jaeseok Choi; Kyuewang Lee; Dasol Hong; Daeho Um; Inseop Chung; Hochul Shin; Min-Jung Kim 001; et al. (IEEE Robotics Autom. Lett., 2023)