Man pages matching name pcl_ground_based_rgbd_people_detector in section 1:

pcl_ground_based_rgbd_people_detector.1.en	debian 10 / pcl-tools
pcl_ground_based_rgbd_people_detector.1.en	debian 11 / pcl-tools
pcl_ground_based_rgbd_people_detector.1.en	debian 12 / pcl-tools