Florent Lafarge Xavier Descombes Josiane Zerubia Marc Pierrot Deseilligny 3D City Modeling Based on Hidden Markov Model. 521-524 2007 ICIP (2) http://dx.doi.org/10.1109/ICIP.2007.4379207 conf/icip/2007 db/conf/icip/icip2007-2.html#LafargeDZD07