Landing Pad Detection and Computing Direction of Motion for Autonomous Precision Landing QuadcopterJoko Hariyono, Joko Slamet Saputro, Faisal Rahutomo, Sutrisno, Meiyanto Eko Sulistyo, Subuh Pramono and Muhammad Hamka IbrahimE3S Web of Conf., 465 (2023) 02068DOI: https://doi.org/10.1051/e3sconf/202346502068