中文说明：手写数字识别，提取数字骨架，划直线和该骨架相交，取交点数和数字端点为特征向量.建立特征库进行匹配
English Description：
Handwritten numeral recognition, extraction of digital skeleton, draw a line and the skeleton intersection, take the number of intersection points and digital endpoint as feature vector, establish feature library for matching