多状况药品标签日期定位及字符分割方法  

Date positioning and character segmentation for multi-status drug labels

作　　者：王敏 孙硕 李晟 王康 吴佳 WANG Min;SUN Shuo;LI Sheng;WANG Kang;WU Jia(School of Electronic and Information Engineering,Nanjing University of Information Science&Technology,Nanjing 210044,China)

机构地区：[1]南京信息工程大学电子与信息工程学院,南京210044

出　　处：《信息技术》2024年第7期34-39,45,共7页Information Technology

基　　金：国家自然科学基金(41775165,41775039);南京信息工程大学引进人才科研启动专项经费资助(2021r 034)。

摘　　要：药品生产日期和有效期的检测对病人的安全用药有重要影响,而日期字符定位和分割处理直接决定着药品日期自动识别效果。针对含有粘连、断裂等特殊情况的印刷日期字符,提出了一种理想与特殊情况的药品标签日期定位及字符分割方法。首先通过统计行像素灰度变化和列向量距离最大值对日期区域进行定位分割,接着通过投影法判断字符是否有粘连、断裂情况,然后重复投影分割和区域宽度统计对有粘连、断裂的特殊字符进行分割。实验结果表明,文中方法能够有效地对特殊情况的药品标签进行精确的日期定位及字符分割。The detection of drug production date and validity period has an important impact on the patient’s safe medication,and date character positioning and segmentation directly determine the effect of automatic drug date recognition.Based on the printing date characters with special conditions such as adhesion and breakage,an ideal and special case date positioning and character segmentation method for drug labels is proposed.Firstly,the date area is located and segmented by counting the grayscale changes of the row pixels and the maximum distance of the column vector,and then the projection method is used to determine whether the characters are stuck or broken.Nextly,the projection segmentation and the area width statistics are repeated to segment the special characters with adhesion and breaks.The experiment results show that the method in this paper can effectively perform precise date positioning and character segmentation for drug labels in special cases.

关 键 词：生产日期 药品标签 区域定位 字符分割 粘连 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]