3Schantz H.The history of OCR[M].Manchester Center,VT:Recognition Technologies Users Association,1982.
4Wachenfeld S,Klein H U,Jiang X Y.Recognition of screen-rendered text[J].Pattern Recognit,2006,2:1086.
5Yu Z D.A fast image rotation algorithm for optical character recognition of Chinese Documents[J].Commun,Circ Sys Proc,2006,1:485.
6Liu C L.Handwritten Chinese character recognition:effects of shape normalization and feature extraction[J].Arabic Chinese Handwriting Recognit,2008,4768:104.
7Chen Q.Evaluation of OCR algorithms for images with different spatial resolutions and noises[M].Canada:University of Ottawa,2004.
8Bai Z,Huo Q.A study on the use of 8-directional features for online handwritten Chinese character recognition[J].IEEE Comput Soc,2005,1:262.
9Wu T,Qi K Y,Zheng Q,et al.An improved descriptor for Chinese character recognition[J].Intell Info Technol Appl,2009,2:400.