@inproceedings{http://dx.doi.org/10.5244/C.26.82,
	title={Efficient Kernels Couple Visual Words Through Categorical Opponency},
	author={Ioannis Alexiou and Anil Bharath},
	year={2012},
	pages={82.1--82.11},
	booktitle={Proceedings of the British Machine Vision Conference},
	publisher={BMVA Press},
	editors={Bowden, Richard and Collomosse, John and Mikolajczyk, Krystian},
	publisher={BMVA Press},
	isbn={1-901725-46-4},
	doi={http://dx.doi.org/10.5244/C.26.82}
}