Yantao Zheng Ming Zhao 0003 Yang Song Hartwig Adam Ulrich Buddemeier Alessandro Bissacco Fernando Brucher Tat-Seng Chua Hartmut Neven Jay Yagnik Tour the world: a technical demonstration of a web-scale landmark recognition engine. 961-962 2009 ACM Multimedia http://doi.acm.org/10.1145/1631272.1631468 conf/mm/2009 db/conf/mm/mm2009.html#ZhengZSABBBCNY09