An Improved Formula Extraction Method of Printed Chinese Layouts Based on Connected Component Run-length Feature

被引：0
|
作者：
Yang, Fang [1 ]
Hou, Chunning [1 ]
Tian, Xuedong [1 ]
机构：
[1] Hebei Univ, Sch Comp Sci & Technol, Baoding, Peoples R China
来源：
2017 INTERNATIONAL CONFERENCE ON VISION, IMAGE AND SIGNAL PROCESSING (ICVISP) | 2017年
基金：
中国国家自然科学基金;
关键词：
formula image; Chinese; formula location; connected component; run-length;
D O I：
10.1109/ICVISP.2017.28
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The mathematical formula extraction is the prerequisite of formula structure analysis, recognition and retrieval. This paper studies the formula extraction method for the printed Chinese scientific and technical document images, proposes a criterion based on connected component run-length feature to estimate formulae in text lines, and then improves the formula location method based on rules. The connected component run-length's change regularity was analyzed firstly for all symbols in a text line. Then Change-rate threshold was set to estimate whether there is formula in this line. Finally, improved formula extraction method was given. The experimental results on the samples collected from printed Chinese scientific and technical documents showed that the proposed method is effective in estimate the embedded formula, and improves the accuracy of the formula location.
引用
收藏
页码：114 / 117
页数：4
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