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二次Radon变换在高密度矩阵码识别中的应用
Application of high density to matrix symbology based on quadratic Radon transformation
【摘要】 根据Radon变换的基本思想方法,提出了一种基于行差列差的二次Radon变换算法,采用该方法可以对矩阵式二维条码即使条码的模块仅占有2.3像素的情况下进行精确快速的识别,该算法主要用于高密度(亚像素级)的矩阵式二维条码QRCode,Data Matrix,Code93等二维条码的识别。
【Abstract】 According to the fundament of Radon transform,a new algorithm based on the quadratic transformation of row-difference and column-difference is proposed.By adopting this algorithm,the module of two-dimensional symbology can be recognized rapidly and accurately,even though the minimum module of the barcode is about only 2.3 pixels in size.This algorithm can be used in the two-dimensional matrix symbology with the level of high density(subpixel),such as QR Code,Data Matrix,and Code93.
【关键词】 图像处理;
Radon变换;
行差列差;
二维条码;
【Key words】 image processing; Radon transform; row-difference and column-difference; two-dimensional symbology;
【Key words】 image processing; Radon transform; row-difference and column-difference; two-dimensional symbology;
【基金】 中国博士后科学基金资助项目(No.20070410940);辽宁省智能信息处理重点实验室开放课题资助项目(No.2005-8)
- 【文献出处】 计算机工程与应用 ,Computer Engineering and Applications , 编辑部邮箱 ,2010年29期
- 【分类号】TP391.41
- 【被引频次】2
- 【下载频次】91