“…In the field of combustion, (Kostka et al, 2012) provided an analysis of the bluff body wake using high-speed chemiluminescence images. Since then, several papers can be found in the literature that involve the utilization of the proper orthogonal decomposition on high-speed flow and flame imagery (Blanchard et al, 2014;Caswell et al, 2014;Emerson, 2013;Monfort, 2015;Morales et al, 2021;Roy et al, 2015;Shaw et al, 2019;Wickersham et al, 2014;Yang et al, 2020).…”