暗箱环境下数码管的自动快速检测  

Automatic and Fast Detection of Digital Tube in Dark Environment

作　　者：李元媛 方正涛 陈临强[1] LI Yuanyuan;FANG Zhengtao;CHEN Linqiang(Institute of Graphics and Image,Hangzhou Dianzi University,Hangzhou Zhejiang 310018,China)

机构地区：[1]杭州电子科技大学图形图像研究所,浙江杭州310018

出　　处：《杭州电子科技大学学报（自然科学版）》2018年第5期40-44,共5页Journal of Hangzhou Dianzi University：Natural Sciences

摘　　要：为了满足产品界面显示自动检测的要求,通过一种基于轮廓寻找和位置编码的识别方法对七段式数码管显示屏进行自动快速读数。根据数码管显示区域图像在暗箱环境下的字符特点,寻找字符轮廓外接矩形对字符区域进行定位,通过判断字符每段小矩形位置的方法对数字字符进行编码识别。实验结果表明,系统平均识别速度在0.05s以内,识别率高于基于支持向量机的识别算法,满足实际需求。In order to meet the requirements of the products interface display automatic detection,an identification method based on contour search and location coding is put forward to realize the sevensegment digital tube display automatic and fast reading.According to the character characteristics of the digital tube display area image in the dark environment,the character area is located by finding the circumscribed rectangle of the character outline,and the digital character is distinguished by the method of determining the position of each small rectangle of the character.The experimental results show the average recognition speed of this system is lower than 0.05 seconds,and the recognition rate is higher than SVM,can meet the actual demand.

关 键 词：数码检测 定位外接矩形 位置编码 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]