Layout Analysis of PDF Documents by Two-Dimensional Grammars for the Production of Accessible Textbooks
Layout Analysis of PDF Documents by Two-Dimensional Grammars for the Production of Accessible Textbooks
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通过二维语法对 PDF 文档进行布局分析，用于制作无障碍教科书
DOI：
10.1007/978-3-030-58796-3_38
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
and Akio Fujiyoshi
中科院分区：
文献类型：
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作者：
Kento Kohase;Shunsuke Nakamura;and Akio Fujiyoshi
本文提出使用二维上下文无关语法（2DCFG）进行 PDF 文档的布局分析。在日本，义务教育阶段已经为有阅读障碍的学生提供了有声教科书。为了创建包括音频教科书在内的无障碍教科书，需要获取PDF格式的普通教科书文档的结构和阅读顺序信息。这不是一个简单的任务，因为大多数 PDF 文件只包含如何打印的信息，而且大多数教科书的页面布局都很复杂。通过使用 2DCFG，我们可以获得 PDF 格式的常规教科书的有用信息，以制作无障碍教科书。
This paper proposes the use of two-dimensional context-free grammars (2DCFGs) for layout analysis of PDF documents. In Japan, audio textbooks have been available for students with print disabilities in compulsory education. In order to create accessible textbooks including audio textbooks, it is necessary to obtain the information of structure and the reading order of documents of regular textbooks in PDF. It is not simple task because most PDF files only have the information how to print them out, and page-layouts of most textbooks are complex. By using 2DCFGs, we could obtain useful information of regular textbooks in PDF for the production of accessible textbooks.