%0 Journal Article
%T Location Algorithm of PDF417 Based on Wavelet Multi-resolution Analysis<br>基于小波多分辨率分析的 PDF417 定位算法
%A LV Pei-Zhuo
%A LAI Xiao-Zheng
%A LAI Sheng-Li
%A <br>吕佩卓
%A 赖晓铮
%A 赖声礼
%J 自动化学报
%D 2008
%I 
%X To improve the efficiency of detecting and locat- ing PDF417 two-dimensional barcode,an automatic detecting and locating approach based on wavelet multi-resolution analy- sis is presented,in which the regional growth method based on feature vector and texture comparability theory is adopted to produce the candidate sub-area set of two-dimensional barcode in high frequency sub-images,and then the candidate sub-area set are verified by examining the start/stop pattern and edge characteristics of PDF417 in low frequency sub-image to gain the location of PDF417 in original image.Experiments show that the approach can detect and locate exactly the two dimen- sional barcode for PDF417 with different backgrounds,and is superior to the traditional algorithms in practicability.
%K Wavelet analysis
%K multi-resolution analysis
%K image locating
%K feature extracting
%K two-dimensional barcode<br>小波分析
%K 多分辨率分析
%K 图像定位
%K 特征提取
%K 二维条码
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=E76622685B64B2AA896A7F777B64EB3A&aid=7DC0EBD136B35CAADA8F6723E9C0D7ED&yid=67289AFF6305E306&vid=339D79302DF62549&iid=94C357A881DFC066&sid=0A8675156EB60B87&eid=1D5555D0B4345CA8&journal_id=0254-4156&journal_name=自动化学报&referenced_num=0&reference_num=9