2Loce R P,Bernal E A,Wu W,et al. Computer vision in roadway transportation systems: a survey[J]. Journal of Electronic Imaging, 2013,22 (22).
3Buch N,Velastin S A,Orwell J. A review of computer vision techniques for the analysis of urban traffic[J].IEEE Transactions on Intelligenl Transportation Sys- tems, 2011,12(3).
4Kastrinaki V, Zervakis M, Kalaitzakis K. A survey of video processing techniques for traffic applieations[J]. Image and Vision Computing, 2003, 21 ( 1 ).