Jérémy Levallois David Coeurjolly Jacques-Olivier Lachaud Feature extraction on digital snow microstructures. 73:1 2015 SIGGRAPH Posters https://doi.org/10.1145/2787626.2792637 conf/siggraph/2015posters db/conf/siggraph/siggraph2015posters.html#LevalloisCL15