基于扫描圈的字符识别方法  

A Method of Scan-Circle Recognition in Character Recognition

作　　者：宋贤霞[1] 李玉琴[2] 

机构地区：[1]甘肃中医学院 [2]兰州理工大学

出　　处：《自动化与信息工程》2012年第5期15-17,共3页Automation & Information Engineering

摘　　要：针对目前对各类文献资料进行数字化识别时,公式无法直接转化为可编辑文本形式的问题,提出一种基于扫描圈的字符识别方法。首先对公式中的各个字符进行识别,然后再确定这些字符之间的关系,以达到公式识别的目的。扫描圈识别是一种以笔划结构分析为基础的字符识别方法,通过搜索将字符中的所有连笔符号转化为四进制的扫描圈,然后从扫描圈中提取字符的不变特征量。以这些特征量为模板,用模式匹配法对字符进行识别,并采用最短距离比较的方法进行匹配,以获得较为精确的识别结果。In digital identification of the various types of literature, the mathematical expression can not be directly converted into editable text. To solve this problem, we propose a method of character recognition based on scan-circle. First, the various characters in the expressions are identified, and then the relationship between these characters is determined, finally the purpose of the formula identification is achieved. This method for recognition of characters is based on analysis of stroke structure. All of the connective symbols can be transformed into a string consisting solely of symbols of quaternary digits by searching. Then the invariant feature can be extracted from the string. By using the invariant features as templates, the model matching is adopted to recognize the character, then the recognition technique of the minimum distance method is used. Thereby the recognition result is exact.

关 键 词：扫描圈 扫描核 模式匹配 字符识别 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]