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	Lossy JBIG2 based on optical character recognition
	Shang Junqing ; Liu Changsong ; Ding Xiaoqing
	2010-05-06 ; 2010-05-06
关键词	Practical Theoretical or Mathematical Experimental/ data compression digital libraries document image processing image coding image matching image representation Internet optical character recognition text analysis/ joint bi-level image group lossy JBIG2 encoding method optical character recognition OCR processing bi-level image coding document storage document archiving Internet digital library text image compression pattern matching character image representation/ B6135C Image and video coding B6135E Image recognition B6210L Computer communications C1250B Character recognition C5260B Computer vision and image processing techniques C1250M Image recognition C6130D Document processing techniques C5620W Other computer networks C7210N Information networks C7250 Information storage and retrieval
中文摘要	Bi-level image coding is useful for document storage and archiving, image searches on the Internet and digital libraries. The JBIG2 (joint bi-level image group) standard for lossless and lossy coding of bi-level images is a very flexible encoding strategy which allows researchers to design their own encoders. OCR processing of text images is one encoding technique that gives measurable recognition and the confidence results. We propose a lossy JBIG2 encoding method which uses OCR processing results to improve text image compression based on pattern matching. All the credible recognized characters in the image are replaced by representative character images so that the encoder only needs to mark the positions of these characters. Experiment results show that this method gives better results than previous JBIG2 encoding methods with 14.3% less storage compared to previous lossless methods while preserving relatively good text image quality.
语种	中文 ; 中文
出版者	Tsinghua Univ. Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/11035]
专题	清华大学
推荐引用方式 GB/T 7714	Shang Junqing,Liu Changsong,Ding Xiaoqing. Lossy JBIG2 based on optical character recognition[J],2010, 2010.
APA	Shang Junqing,Liu Changsong,&Ding Xiaoqing.(2010).Lossy JBIG2 based on optical character recognition..
MLA	Shang Junqing,et al."Lossy JBIG2 based on optical character recognition".(2010).

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