@ARTICLE{6230673, 
author={Chatzichristofis, S.A. and Iakovidou, C. and Boutalis, Y. and Marques, O.}, 
journal={Cybernetics, IEEE Transactions on}, 
title={Co.Vi.Wo.: Color Visual Words Based on Non-Predefined Size Codebooks}, 
year={2013}, 
volume={43}, 
number={1}, 
pages={192-205}, 
doi={10.1109/TSMCB.2012.2203300}, 
ISSN={2168-2267},}