摘要
PDF417型二维条码是一种多层、可变长度、具有高容量和纠错能力的二维条码,但由于图像的采集过程中容易受到各种噪声干扰,使得条码的识别率不高。本文利用LabVIEW虚拟仪器软件平台提供的IMAQ Vision模块,通过实验分析比较各种滤波及边缘检测的方法,提出一套完整的针对PDF417型二维条码的识别方法。结果表明,该方法能有效的滤除噪声,检测完整的边缘,提高检测精度。
PDF417 is a kind of 2-D matrix bar code with multi-layer,variable length,high capacity and error correcting capability.It makes a low recognition rate because of the noise interference during the acquisition process.The paper uses the IMAQ VISION module,provided by Virtual instrument LabVIEW,analyzes and compares various methods of filtering and edge detection,then,put forward a complete recognition method aiming at PDF417.The result suggests that the method can filtering noise effectively,detects the edge integrate and get high precision.
出处
《微计算机信息》
2010年第7期197-198,215,共3页
Control & Automation
关键词
二维条码
图像处理
LABVIEW
边缘检测
2-D bar code
image processing
LabVIEW
edge detection（Key Laboratory of Conveyance and Equipment
