中文说明：本代码为matlab英语字母和数字识别代码，使用autocorrelation算法.代码在matlab7.0中运行成功，对于字体单一的情况，处理效果较好。
English Description：
This code is matlab English letters and numbers recognition code, using autocorrelation algorithm. The code runs successfully in matlab7.0, for the case of single font, the processing effect is better.