Yusuke Nakazato Masayuki Kanbara Naokazu Yokoya Wearable Augmented Reality System Using Invisible Visual Markers and an IR Camera. 198-199 2005 conf/iswc/2005 ISWC http://doi.ieeecomputersociety.org/10.1109/ISWC.2005.55 db/conf/iswc/iswc2005.html#NakazatoKY05