@conference {1172545,
	title = {A Viewpoint Invariant Approach for Crowd Counting},
	booktitle = {ICPR {\textquoteright}06: Proceedings of the 18th International Conference on Pattern Recognition},
	year = {2006},
	pages = {1187{\textendash}1190},
	publisher = {IEEE Computer Society},
	organization = {IEEE Computer Society},
	address = {Washington, DC, USA},
	isbn = {0-7695-2521-0},
	doi = {http://dx.doi.org/10.1109/ICPR.2006.197},
	author = {Kong, D. and Gray, Douglas and Tao, H.}
}
