手写数字识别系统，能识别0~9，可以进行训练或读取样本文件，选取最符合特征值的前两个显示，可以人工纠错-Handwritten numeral recognition system that can identify 0-9, can be trained or read sample file,　the most compatible with the values ​ ​ of the two display features, can be manually Correction