本文结合银行票据OCR系统的开发,提出一种基于知识进行银行票据二值化的新思路,并针对各类识别域具体构造了一整套二值化方法。通过在银行票据OCR系统中的应用,验证了本文二值化方法的效果。
Abstract
Combining with the development of financial document OCR system ,this Paper presents a new idea about knowledge-based binarization for financial document . Aiming at different kinds of recognition fields (fields of financial document that need to be recognized) ,this paper constructs a suit of binarization methods. The effectiveness of those methods is proved by practically applying.
关键词
知识 /
二值化 /
文字识别 /
金融票据
{{custom_keyword}} /
Key words
Knowledge /
Binarization /
OCR /
Financial Document
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] J. Kittler and J. Illingworth ,Minimum error thresholding ,Pattern Recognition ,1986 ,19 (1) :41 - 47
[2] J N Kapur ,P K Sahoo ,A. K. C. Wong ,A new method for gray-level picture thresholding using the entropy of the histogram , Computer Vision , Graphics and Image Processing ,1985 ,29 :273 - 285
[3] J M White ,G D. Rohrer , Image Thresholding for Optical Character Recognition and Other Applications Requiring Character Image Extraction , IBM J. Research and Development ,July 1983 ,27 (4) :400 - 411
[4] Kamel ,Mohamed ;Zhao ,Aiguo ,Extraction of binary character/graphics images from grayscale document images , CV GIP : Graphical Models and Image Processing ,May 1993 ,55 (3) :203 - 217
[5] J R Parker , Gray Level Thresholding in Badly Illuminated Image , IEEE Trans. Pattern Analysis and Machine Intelligence ,1991 ,13 (8) :813 - 819
[6] T. Kanade ,Survey-region segmentation :signal versus semantics , Computer Graphics and Image Processing ,1980 ,13 :279 - 297
[7] Crevier ,D. and R. Lepage ,Knowledge-based image understanding systems-a survey ,Computer Vision and Image Understanding ,1997 ,67 (2) :161 - 185
[8] P K Sahoo ,S Soltani ,A. K. C. Wong ,A Survey of Threslholding Techniques ,Computer Vision ,Graphics ,And Image Processing ,1988 ,41 :233 - 260
[9] Cheriet M. ,Said J N ,Suen C Y,Recursive thresholding technique for imagesegmentation , IEEE Transactions on Image Processing ,1998 ,7 (6) :918 - 921
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}
基金
国家863计划(863-306-ZT03-05-1)；国家教育部骨干教师基金
{{custom_fund}}
PDF(238 KB)
