Computer Science ›› 2022, Vol. 49 ›› Issue (11): 163-169.doi: 10.11896/jsjkx.210900225

• Computer Graphics & Multimedia • Previous Articles     Next Articles

Handwritten Image Binarization Based on Background Estimation and Local Adaptive Integration

HE Huang-xing1, CHEN Ai-guo1, WANG Jiao-long2   

  1. 1 School of Artificial Intelligence and Computer Science,Jiangnan University,Wuxi,Jiangsu 214122,China
    2 School of Internet of Things Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China
  • Received:2021-09-27 Revised:2022-03-15 Online:2022-11-15 Published:2022-11-03
  • About author:HE Huang-xing,born in 1997,master.His main research interests include ima-ge processing and machine learning.
    CHEN Ai-guo,born in 1975,associate professor.His main research interests include machine learning,artificial intelligence and pattern recognition.
  • Supported by:
    National Natural Science Foundation of China(61702225).

Abstract: In handwritten document images,there are often uneven lighting,ink stains,paper degradation,shadows and other complex conditions.In order to solve the problem that OCR effect of document image is not ideal after binarization in complex background,a binarization method of improved background estimation and local adaptive integration is proposed.In this method,the local adaptive binarization method is first used to obtain the binarization image with high recall rate,then the improved background estimation method is used to obtain the binarization image with high accuracy rate,and finally the two types of binarization images are integrated based on the connected domain method to obtain the final binarization image.Experimental results on DIBCO2013 and DIBCO2016 handwritten data sets show that the proposed method has better overall performance than Otsu,Wolf,Niblack,Sauvola,Singh and Howe.

Key words: Image processing, Handwritten document image, Binarization, Background estimate, Binary integration

CLC Number: 

  • TP391
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