基于灰度图像的表格框线去除算法.pdf

计算机研究与发展 ISsN1000—1239／CN11—1777／TP of Researchand JoumalC0mputer Development 基于灰度图像的表格框线去除算法 张重阳1’2 陈 强1 娄 震1 杨静宇1 1(南京理工大学计算机科学与技术系南京210094) 2(中创软件工程股份有限公司济南250014) (zcy603@163．com) AFormFrameLineRemOVal Basedon A190rithm Image Gray-LeVel Zhenl，and Zhang p，ChenQian91，Lou YangJingyul Chongyan91 210094) Lkit杷rs矗yo，据佗cPn挖d砌矗咒ozogy，』忆巧i咒g 1(DeZ硷r￡，”g咒￡0’厂CD优户“招rie咒cP口咒d殛矗竹ozo冒y，Nn巧i卵g 2(CⅥC S啦伽即E规g锄酗ri馏CDm∞删Limi￡以，以咒彻250014) Abstract isan ina document In Preprocessprocedureimportantprocedure image document characters withthe form frames，creating practical images， usuallyoverlap preprinted of removal arebased tremendousforthe theformframe1ine problemsrecognitionengines．Most algorithms onbi—level havelostmuch the inthis binarystage．Proposedpaper images，which usefulinformation．during isalineremoval basedon ofcharactersandlinesare algorithmdirectly gray—levelimages．First，cross—points detected the ofcharactersandlinesareconvertedintotouch by!沁blegradient．Thenoverlappingtypes type are orcrossover removedwith bycross—pointsanalysis．Finally，linestopological type on reallifechar