A volumetric change detection framework using UAV oblique photogrammetry–a case study of ultra-high-resolution monitoring of progressive building collapse N Xu, D Huang, S Song, X Ling, C Strasbaugh, A Yilmaz, H Sezen, R Qin International Journal of Digital Earth 14 (11), 1705-1720, 2021 | 14 | 2021 |