水表读数识别对于楼宇水费的自动采集，创建智能化小区，提高收费员的工作效率都有着重要的意义。然而由于轮盘的转动，常常出现半个字符的情形，造成此类识别与通常的号码识别不同。本算法枚举出所有半个字符的情况，提取特征，从而匹配识别，达到了较好的效果。-meter readings for the identification of automatic building water collection, create intelligent neighborhood fare increase efficiency of the work is of great significance. However, due to the roulette wheel and a half characters often find the situation caused such identification with the usual number identification. The algorithm except that all the characters in half, feature extraction, matching identification, achieve better results.