基于两点法的医疗化验单倾斜校正算法  

Algorithm for Skew Correction of Medical Test Sheet Based on Two-point Method

作　　者：贾智彬 吕学强[1] 何健 董志安[2] JIA Zhibin;LYU Xueqiang;HE Jian;DONG Zhian(Key Laboratory of Internet Culture Digital Dissemination,Beijing Information Science and Technology University,Beijing 100101;Beijing Lawke Intelligent Medical Technology Co.,Ltd.,Beijing 100015;Institute of Internet Industry,Tsinghua University,Beijing 100084)

机构地区：[1]北京信息科技大学网络文化与数字传播重点实验室,北京100101 [2]北京洛奇智慧医疗科技有限公司,北京100015 [3]清华大学互联网产业研究院,北京100084

出　　处：《计算机与数字工程》2022年第10期2280-2284,共5页Computer & Digital Engineering

基　　金：北京成像技术高精尖创新中心项目(编号:BAICIT-2016003);国家自然科学重点实验室基金项目(编号:61671070);北京信息科技大学促进高校内涵发展科研水平提高项目(编号:2019KYNH226);北京信息科技大学“勤信人才”培育计划项目(编号:QXTCPB201908)资助。

摘　　要：医疗化验单自动处理中,采集到的化验单不可避免地会出现倾斜现象,会给后续的处理和识别带来困难。论文提出一种基于两点法改进的倾斜校正方法,该方法将二值化后化验单中的斜线分割成多个近似直线的线段,通过最小求和方法得到其线段左右两个端点的坐标,然后计算化验单图像的倾斜角度,最后利用旋转变换将化验单进行倾斜校正。与传统校正方法相比,该校正方法对化验单的倾斜校正效果较好,具有速度快、正确率高的优点。In the automatic processing of medical test sheet,the collected test sheet will inevitably appear skew,which will cause difficulties in subsequent processing and identification. This paper proposes an improved tilt correction method based on two-point method. This method divides the oblique line in the binarization test sheet into multiple straight line segments,and obtaines the coordinates of the left and right end points of the line segment by the minimum sum method and calculates the slant angle of the test sheet image,and finally uses the rotation transform to perform skew correction on the test sheet. Compared with the traditional correction method,this correction method has a better effect on the skew correction of the test sheet,and has the advantages of fast speed and high accuracy.

关 键 词：医疗化验单 倾斜校正 两点法 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]