[1] PENG Jian，WANG Tong-qing，YE Jun-yong，et al. An on-line computer image recognition system based on neural network [J].Opto-Electronic Engineering，2002，29(6)：54-60.

[2] CAO Dan-hua，LIU Bin-bing，WU Yu-bin. A fast recognition algorithm for banknote denomination based on projection characteristics matching [J]. Opto-Electronic Engineering，2004，31(1)：59-61.

[3] WANG Tian-yang，CHENG Wei-dong，LI Jian-yong. Optimal evaluation of feature extraction method based on three types of measure values [J]. Chinese Journal of Scientific Instrument，2010，31(4)：899-902.

[4] Anil K Jain. Statistical Pattern Recognition：A Review [J]. IEEE Transaction on Pattern Analysis and Machine Intelligence(S0162-8828)，2000，22(1)：4-37.

[5] TANG Bo，SHI Yi-kai，WANG Huan，et al. Beer bottle characters extraction and recognition method based On circular projection [J]. Computer Engineering and Applications，2010，46(13)：229-232.

[6] Trier O D. Feature extraction methods for character recognition [J]. Pattern Recognition(S0031-3203)，1996，29(4)：641-662.

[7] LI Bing-tao，JI Gang. Application of Recognition Algorithm for Printed Numerals in Number Recognition of Firearms [J].Computer Science，2009，36(4B)：282-284.

[8] Lam L. Thinning methodologies [J]. IEEE Transaction on Pattern Analysis and Machine Intelligence(S0162-8828)，1992，14(9)：869-885.

[9] Christopher M Bishop. Neural Networks for Pattern Recognition [M]. England：Oxford University Press，1995：164-190.