7Stem R.From Intelligent Character Recognition to Intelligent Document Processing[M].Electronic Imaging Exposition and Conf.,Prentice-Hall,Englewood Cliffs,NJ,1987.
8Hu J H,Wang R S,Wang Y.Compression of Personal Identification Pictures Using Vector Quantization with Facial Feature Correction[J].Optical Engineering,1996,35(1):198-203.
9刘道昌.密码编码学与网络安全:原理与实践[M].北京:电子工业出版社,2001.
10Xiong Z,Ramchandran K,Orchard M T.Space-Frequency Quantization for Waveler Image Coding[M].IEEE Trans.IP,1997.