基于公式识别器的PDF图像数学公式定位结果错误校正方法  

Error Correction Method for Positioning Result of PDF Image Mathematical Formula Based on Formula Recognizer

作　　者：孙静[1] SUN Jing(Wuxi Mechanical and Electrical Branch,Jiangsu United Vocational and Technical College,Wuxi Jiangsu 214000,China)

机构地区：[1]江苏联合职业技术学院无锡机电分院,江苏无锡214000

出　　处：《兰州工业学院学报》2020年第6期78-82,共5页Journal of Lanzhou Institute of Technology

基　　金：江苏省现代教育技术研究“十三·五”规划基金项目(2017-R-53244)。

摘　　要：针对PDF文档中数学公式覆盖范围不完整和数学表达式符号错误识别成普通字符问题,提出一种以公式识别器为基础的PDF图像数学公式定位结果错误校正法.通过对数学公式的识别与定位,以确定其是否含有公式界限符号和二次运算符号,校正错误识别的数学字符块.结果表明:PDF图像数学公式定位结果错误校正方法可以改善定位算法的适应性与校正错误的准确性.In order to solve the problems of incomplete coverage of mathematical formula and error recognition of mathematical expression symbols into common characters in FDF documents,a method of error correction for positioning results of PDF image mathematical formula based on formula recognizer is proposed.Through the recognition and location of mathematical formula,whether it contains formula boundary symbol and secondary operation symbol can be determined to correct the mathematical character block of error recognition.Finally,the experimental results show that the error correction method based on PDF image mathematical formula can improve the adaptability of the positioning algorithm and the determination of error correction.

关 键 词：公式识别器 PDF图像 数学公式 错误校正 

分 类 号：TP391.1[自动化与计算机技术—计算机应用技术]