Lucas Teixeira Manuel Loaiza Alberto Raposo Marcelo Gattass Augmented Reality Using Projective Invariant Patterns. 520-529 2008 ISVC (1) http://dx.doi.org/10.1007/978-3-540-89639-5_50 conf/isvc/2008-1 db/conf/isvc/isvc2008-1.html#TeixeiraLRG08