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利用提取边缘线的方法定位条形码
引用本文:吴忻生,邓军.利用提取边缘线的方法定位条形码[J].计算机应用,2010,30(5):1246-1250.
作者姓名:吴忻生  邓军
作者单位:1. 2. 华南理工大学
基金项目:国家自然科学基金资助项目(60835001)
摘    要:为解决基于图像处理方式识别条形码的问题,提出了利用图像边缘线来有效且快速定位条形码的方法。该方法首先用大津法对原始灰度图像获得一个阈值,并对图像中灰度小于此阈值的像素进行隔行隔列处理,提取边缘线。然后将图像分割成大小相等的水平条,依据质心的位置和水平条中边缘点的数量分布确定起始条。通过已知的离散直线中小阶梯最下端的边缘点来拟合直线,并得到直线倾斜角度。仿真实验比较了Sobel算子边缘检测方法和该方法提取边缘线,以及用检测直线的Hough变换方法和该方法进行直线拟合的处理效果和运行时间,结果表明了所提出算法的有效性、快速性和可靠性。

关 键 词:边缘线  条形码  条形码定位  阈值  大津法  直线检测  
收稿时间:2009-11-06
修稿时间:2010-01-03

Bar code localization by extracting edge lines
WU Xin-sheng,DENG Jun.Bar code localization by extracting edge lines[J].journal of Computer Applications,2010,30(5):1246-1250.
Authors:WU Xin-sheng  DENG Jun
Affiliation:1.Engineering Research Centre for Precision Electronic Manufacturing Equipment of Ministry of Education/a>;South China University of Technology/a>;Guangzhou Guangdong 510640 China/a>;2.College of Automation Science and Engineering/a>;Guangzhou Guangdong 510640/a>;China
Abstract:Concerning the problems of recognizing bar code using image processing method,an effective and rapid algorithm was proposed to localize bar code through extracting edge lines.In this algorithm,a threshold value was obtained firstly by Otsu binary method from the original gray-level image.Pixels with gray values smaller than the threshold value were considered.The edge lines were extracted by sequential interlaced scanning in both row and column directions.Then the whole image was divided into strips of the ...
Keywords:edge line  bar code  bar code localization  threshold  Otsu method  line detection  
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