Fast and Accurate Thickness Mapping of Thin Liquid Films Zhe Wang, Vincenzo Ferraro, Biagio Mandracchia, Ernesto Di Maio, Pier Luca Maffettone and Pietro Ferraro EPJ Web Conf., 215 (2019) 12002 Published online: 10 September 2019 DOI: 10.1051/epjconf/201921512002