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	Identification of embedded mathematical formulas in PDF documents using SVM
	Lin, Xiaoyan ; Gao, Liangcai ; Tang, Zhi ; Hu, Xuan ; Lin, Xiaofan
	2012
关键词	Mathematical formula recognition formula identification embedded formulas PDF documents EXPRESSIONS
英文摘要	With the tremendous popularity of PDF format, recognizing mathematical formulas in PDF documents becomes a new and important problem in document analysis field. In this paper, we present a method of embedded mathematical formula identification in PDF documents, based on Support Vector Machine (SVM). The method first segments text lines into words, and then classifies each word into two classes, namely formula or ordinary text. Various features of embedded formulas, including geometric layout, character and context content, are utilized to build a robust and adaptable SVM classifier. Embedded formulas are then extracted through merging the words labeled as formulas. Experimental results show good performance of the proposed method. Furthermore, the method has been successfully incorporated into a commercial software package for large-scale e-Book production.; Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic; Optics; EI; CPCI-S(ISTP); 0
语种	英语
DOI标识	10.1117/12.912445
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/321209]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Lin, Xiaoyan,Gao, Liangcai,Tang, Zhi,et al. Identification of embedded mathematical formulas in PDF documents using SVM. 2012-01-01.

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