基于颜色特征的数字式仪表读数定位方法  

Digital meter reading localization method based on color features

作　　者：雷海军[1] 谢莲花[2] 何业军[2] 李灵敏[2] 

机构地区：[1]深圳大学计算机与软件学院,广东深圳518060 [2]深圳大学信息工程学院,广东深圳518060

出　　处：《重庆邮电大学学报（自然科学版）》2012年第2期227-230,268,共5页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：国家自然科学基金(60972037);省部产学研项目(2009B090300267);深圳市基础研究计划(JC200903120101A);南山区科技计划项目(2009045)~~

摘　　要：利用颜色特征提出一种数字式仪表读数定位方法,先对仪表彩色图像进行颜色特征转换,将仪表中的液晶屏区域分割出来,然后对液晶屏图像进行二值化,最后利用读数字符串的投影特征对字符串进行精确定位。利用现场实际采集的仪表图像进行实验,实验结果表明该算法对光照不均以及复杂背景具有较好的适应能力,有效地解决了静态图像和复杂背景下数字式仪表图像中的读数定位问题,且定位准确度较高。A digital meter reading localization method based on color features is presented.First,the colored input image is transformed to distinguish the LCD（liquid crystal display） area from the other areas.Then,the LCD image is binarized and the meter reading characters are localized through employing the projecting features.An experiment was done with some digital images collected from the actual working environment.The experimental result shows that the method is applicable to uneven illumination and complex background circumstances,and it resolves the reading localization problem existing in the still image,and the complex background,and the localization accuracy is high.

关 键 词：数字式仪表 液晶屏 自动定位 颜色特征 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]