%0 Journal Article
%T A Two-Level Video Text Localization Algorithm Based on Strokes and Adaboost<br>基于笔画和Adaboost的两层视频文字定位算法
%A CHENG Hao
%A HUANG Lei
%A LIU Chang-Ping
%A TAN Nu-Tao
%A <br>程豪
%A 黄磊
%A 刘昌平
%A 谭怒涛
%J 自动化学报
%D 2008
%I 
%X This paper proposes a new video text localization algorithm in a localization-to-verification framework.In the localization module,to take full advantage of character stroke attribute,the algorithm introduces a stroke operator which has a strong response to text regions;subsequently,it performs strokes extraction,stroke density filtration and region decomposition to obtain candidate text boxes.In verification module,the algorithm extracts edge oriental histogram features,which have strong discriminabilities for text and non-text,then the Adaboost classifier is used to verify candidate text boxes.Experimental results demonstrate that the proposed algorithm has strong robustness and is capable of obtaining relatively good localization results in various types of video frames.
%K Text localization
%K stroke extraction
%K edge oriental histogram
%K Adaboost
%K video OCR<br>文字定位
%K 笔画提取
%K 边缘方向直方图，Adaboost
%K 视频OCR
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=E76622685B64B2AA896A7F777B64EB3A&aid=9CD9464C7F9E48EA1CDEA628460AFA6D&yid=67289AFF6305E306&vid=339D79302DF62549&iid=F3090AE9B60B7ED1&sid=2A0592C45C936A61&eid=0E223208672FF713&journal_id=0254-4156&journal_name=自动化学报&referenced_num=1&reference_num=9