1Poon J C H, Ghadia M, Mao G M T, et al. A robust vision system for vehicle license plate recognition using gray-scale morphology. In: Proc of the IEEE International Symposium on Industrial Electronics. Athens, 1995. 394~399
2Parisi R, Cludio E D D, Lucarelli G, et al. Car plate recognition by neural networks and image processing. In: Proc of the 1998 IEEE International Symposium on Circuits and Systems. Monterey, 1998. 195~198
4Comelli P, Ferragina P, Granieri M N, et al. Optical recognition of motor vehicle license plates. IEEE Trans Veh Technol, 1995, 44(4): 790~799
5Naito T, Tsukada T, Yamada K, et al. robust license-plate recognition method for passing vehicles under outside environment. IEEE Trans Veh Technol, 2000, 49(6): 2309~2319
6Yu M, Kim Y D. An approach to Korean license plate recognition based on vertical edge matching. In: Proc of the 2000 IEEE International Conference on Systems, Man, and Cybernetics, 2000. 2975~2980
7Lee S W, Kim C H, Ma H, et al. Multiresolution recognition of unconstrained handwritten numerals with wavelet transform and multi-layer cluster neural network. Pattern Recognition, 1996, 29(12): 1953~1961
8Mallat S. A Wavelet Tour of Signal Processing. Beijing: China Machine Press, 2003