二维条形码的识别及应用.pdf

二维条形码的识别及应用 17 二维条形码的识别及应用 , ( , 200240) : Datamatrix 是矩阵式二维条形码之一, 由于其尺寸小必威体育官网网址性好纠错能力强而广泛使用在工业数 据安全及其他行业在实际应用中, 由扫描设备得到的二维条码图像通常有噪声污损及背景干扰, 并 具有平移旋转为提高实际应用中的正确译码率, 通过预处理和两次图像定位, 从实际图像中分割出 Datamatrix图像, 再从中读取数据, 进行正确译码, 完成对 Datamatrix的识别 : H ough变换; 图像定位; 图像旋转; Datamatrix; 纠错 : TP391. 44 : A : 1000- 8829( 2006) 12- 0017- 03 Im age R ecogn ition in 2-D Bar Code HEN Yuan-yuan, SH I Peng-fei ( Institute of Image Processing and Pattern Recognition, Shanghai Jiaotong University, Shangha,i 200240) Abs tract: Datam atrix is a kind of 2-D matrix bar code. Because of its small dmi ension, good security and high ability of error correction, it has beenw idely used in industry, data security, and other areas. In application, the mi ages awl ays include noise, blurs, background, or geom etric transform ation. A m ethod of recognizing Datam a- trix is presented. By preprocessing and wt ice-localization, Datam atrix symbol is segmented from the mi age and its data are obtained, then decoded. K ey w ord s: H ough transformation; mi age localization; mi age rotate; Datam atrix; error correct Datamatrix Datacode, 0, , , 1989, Datam atrix , ( 1 , ) , Datam atrix Datamatrix: ( E 000-40 E 200, E 200 )Datamatrix Reed-Solomon, L, ; , 10 Datamatrix , , E 200, , , L Datamatrix E 200 , Datamatrix , Data- 2 Datam atrix matrix, , Datamatrix( , ), Datamatrix , 1 Datam atrix , 2 Datamatri