Azam Sheikh Muhammad Niklas Lavesson Paul Davidsson Mikael G. Nilsson Analysis of Speed Sign Classification Algorithms Using Shape Based Segmentation of Binary Images. 1220-1227 2009 CAIP https://doi.org/10.1007/978-3-642-03767-2_148 https://www.wikidata.org/entity/Q58038598 conf/caip/2009 db/conf/caip/caip2009.html#MuhammadLDN09