[1]金京犬,刘清.基于嵌入式ARM的指针式仪表读数的识别研究[J].南京师范大学学报(工程技术版),2009,09(01):023-27.
　Jin Jingquan,Liu Qing.Research of Recognition for Pointer Angle of Dial Based on Embedded ARM[J].Journal of Nanjing Normal University(Engineering and Technology),2009,09(01):023-27.
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基于嵌入式ARM的指针式仪表读数的识别研究
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
09卷
期数:
2009年01期
页码:
023-27
栏目:
出版日期:
2009-03-30

文章信息/Info

Title:
Research of Recognition for Pointer Angle of Dial Based on Embedded ARM
作者:
金京犬;刘清;
南京师范大学数学与计算机科学学院, 江苏南京210048
Author(s):
Jin Jingquan; Liu Qing
School of Mathematics and Computer Science,Nanjing Normal University,Nanjing 210048,China
关键词:
嵌入式ARM;  图像识别;  差影法;  最小二乘法
Keywords:
embedded ARM;  im ag e recognition;  subtraction law;  least squarem ethod
分类号:
TP391.41
摘要:
指针式仪表自动读数识别,是实现各种指针式仪表自动检定最重要的基础.针对嵌入式ARM系统,采用了一种适合实际设备运行的指针角度识别算法——差影法,并利用最小二乘法拟合指针直线方程.系统充分利用图像动态采集设备和基于多线程系统平台,把图像处理的算法和特征提取的算法进行优化结合,使得采集和判读以多线程方式并发执行.该系统实时性较好、误差小,通过实验结果证明这种算法对于嵌入式ARM系统下的指针式仪表读数的识别具有高效性.
Abstract:
The au tom atic recognition techno logy o f ana log m easurem ent instrum ents is ve ry im portant fo r automa tic ca l-i bration dev ices. In th is artic le, a new m ethod for the po in t ang le recognition is brought forwa rd, wh ich is specia lly fit to running equ ipm ents, and then least squarem ethod is used to approx im ate the po int equation. Itm ake fu ll use of dynam ic im age acquisition equ ipm ent and mu lt-i threaded platfo rm, the im age pro cessing a lgo rithm s and feature ex traction algorithm s to optim ize the comb ination o f acqu isition and interpreta tion in order tom akem ult-i threaded imp lem enta tion o f the comp licated w ay. The system has the traits o f easy ca lcu lation, good rea l tim e and low recogn ition e rror. Through a great deal o f d iffe rent condition exper iments, this kind o f ca lcu lation m ethod is proved to be very v alid for the po int read ing s o f the embedded ARM system.

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备注/Memo

备注/Memo:
基金项目: 江苏省高校自然科学基金( 06KJD520099)资助项目. 通讯联系人: 刘 清, 博士, 副教授, 研究方向: 智能控制系统的研究与开发. E-mail: njnulq@163. com
更新日期/Last Update: 2013-04-23