Ralph Guderlei Simone Klenk Johannes Mayer Volker Schmidt Evgueni Spodarev Algorithms for the computation of the Minkowski functionals of deterministic and random polyconvex sets. 464-474 2007 25 Image Vis. Comput. 4 https://doi.org/10.1016/j.imavis.2006.07.019 db/journals/ivc/ivc25.html#GuderleiKMSS07