99000 registration videos + 1360 videos in different scenes 1. Single person registration video: One person under 6 cameras, 5 actions, 2 states of wearing/removing glasses, 60 videos per person, total 1650 people, 99000 videos. 2. 1650 people randomly grouped into 80 groups with 15-25 people per group. Each group is filmed for 15-20 minutes in the following 4 scenes, with one video collected by each camera to obtain data. Multi-person different scene videos: 7 cameras in cafe scene, 3 cameras in elevator scene, 4 cameras in escalator scene, 3 cameras in L-shaped corridor scene, 80 groups, total 1360 videos. age distribution: 18-:14, 18-35:1427, 35-55:223, 55+:4