@article{article8a4f8b94,
title   = {2D Euclidean distance transform algorithms: a comparative survey},
author = {Fabbri, Ricardo and Costa, Luciano da Fontoura and Torelli, Julio Cesar and Bruno, Odemir Martinez},
year = {2008},
doi = {10.1145/1322432.1322434},
journal   = {ACM Computing Surveys}
}