Monorail bridge inspection using digitally-twinned UAVs Lanh V. Nguyen, Trung H. Le, Thao D. Nguyen, Ngai M. Kwok and Quang P. Ha E3S Web Conf., 496 (2024) 04004 Published online: 12 March 2024 DOI: 10.1051/e3sconf/202449604004