@article {siva2016scene,
	title = {Scene invariant crowd segmentation and counting using scale-normalized histogram of moving gradients (HOMG)},
	journal = {arXiv preprint arXiv:1602.00386},
	year = {2016},
	author = {Siva, Parthipan and Shafiee, Mohammad Javad and Jamieson, Mike and Wong, Alexander}
}
