Extracting Key Traffic Parameters from UAV Video with On-Board Vehicle Data Validation Shan, Donghui ; Lei, Tian ; Yin, Xiaohong ; Luo, Qin ; Gong, Lei Abstract Publication: Sensors Pub Date: August 2021 DOI: 10.3390/s21165620 Bibcode: 2021Senso..21.5620S