基于嵌入式系统的Tcode识别  

Tcode Recognition Based on Embedded System

作　　者：薛江[1] 王知衍[1] 曹晓叶[1] 

机构地区：[1]华南理工大学计算机科学与工程学院,广东广州510006

出　　处：《华南理工大学学报（自然科学版）》2013年第5期61-67,共7页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省自然科学基金资助项目(10451064101005826);华南理工大学中央高校基本科研业务费专项资金资助项目(2012ZM0052)

摘　　要：针对传统二维条码在移动终端应用中存在的问题,开发了一个嵌入式的简化二维条码手机Tcode编解码识别系统.该系统包括编解码模块和识别模块.基于Reed-Solomon算法,针对不同数量字符定义了编码及映射方案;提出了基于采样阈值的分块滑动二值化算法来保留定位点,通过圆点滤波结合连通区域形状判定来寻找定位点;采用改进的投影法来进行字符切分.对各种手机的识别测试实验表明,该系统的正确识别率可达95%以上,配合Reed-Solomon算法纠错机制,最终能实现100%正确识别.实验同时证明,在嵌入式设备中,该系统的效率和稳定性能很好地满足应用要求.In order to solve the problems existing in the application of traditional two-dimension barcode to mobile terminals, a recognition system of Tcode coding and decoding based on embedded system, which consists of encoding, decoding and recognition modules, is developed to simplify the two-dimension barcode. In the investigation, novel coding and mapping schemes for characters with different number are proposed based on the Reed-Solomon algorithm, a partitioning and sliding binarization algorithm based on the sampling threshold is used to keep the anchor points, a circle dot filtering with connected region judge is carried out to find the anchor points, and an improved projection method is adopted to segment characters. According to the recognition experiments of a variety of samples from different mobile phones, it is found that, with the help of the proposed system, the average correct recognition rate reaches more than 95% and even 100% with the combination of Reed-Solomon algorithm, and that the proposed system is of high efficiency and stability for actual applications with embedded devices.

关 键 词：Tcode 编码 解码 识别 嵌入式系统 二值化 投影 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]