Research and Developing in Teaching Environment using Board Writing for the Visually Impaired

视障人士板写教学环境的研究与开发

• 批准号: 15300288
• 负责人: OHTAKE Nobuyuki
• 金额: $ 10.43万
• 依托单位: Tsukuba University of Technology (2005-2006)Tsukuba College of Technology (2003-2004)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15300288/
• 关键词: Braille; Math expression; Layout analysis; UEBC; PDF documents; 視覚障害者; 授業環境; 文字認識; 板書

First, we developed the hand-write character recognition system, which works on a virtual black board on the Windows personal computer. However the input area of this system set on the display of the personal computer, it works on a real black/white board which is attached a sensing element. This system recognizes Chinese character called Kanji and mathematical expressions, which is used in higher mathematic/physic education courses. The recognition speed is sufficient for real time use. However Japanese text is written in horizontal and vertical direction, this system analyzes only horizontal writing. Also each Japanese character should be written a fixed frame, the mathematical expressions are written in a same frame. So there are little restrictions when we write same mathematical expressions.Second, we developed document model description method for layout analysis about schoolbook, study-aid book and examination papers and natural science area. Each area contains mathematical expressions. We researched layout elements (text, figure, table, mathematical expressions, and logical structure of document) for layout analysis, and developed its recognizing system. We choose XML file as an internal file structure and an output file considering other application programs. Nowadays, PDF is becoming a popular digital file, so we developed extracting text information system from scientific PDF file for visually impaired. Near the future, this technology is applied for extracting figures from PDF, and extracted figures are translated tactile data for visually impaired.However, previous two items are research and developing, we defined international standard braille code called UEBC with international committee. The UEBC is adapted in April 2004, we considered consistency with our developed systems and UEBC, a new code definition is applied our internal format.

首先，我们开发了手写字符识别系统，该系统工作在Windows个人计算机上的虚拟黑板上。然而，该系统的输入区域设置在个人计算机的显示器上，其工作在附接有感测元件的真实的黑/白色板上。该系统识别汉字汉字和数学表达式，用于高等数学/计算机教育课程。识别速度对于真实的时间使用是足够的。然而，日语文本是在水平和垂直方向上书写的，该系统仅分析水平书写。此外，每个日语字符应该写在一个固定的框架内，数学表达式也写在同一框架内。第二，针对教科书、学习辅助书、试卷和自然科学领域的版面分析，提出了文档模型描述方法。每个区域都包含数学表达式。研究了用于版面分析的版面元素（文本、图形、表格、数学表达式和文档的逻辑结构），并开发了其识别系统。考虑到其他应用程序的特点，我们选择XML文件作为内部文件结构和输出文件。目前，PDF文件已经成为一种流行的数字文件，因此我们开发了面向视障人士的科学PDF文件文本信息提取系统。不久的将来，这项技术被应用于从PDF中提取数字，提取的数字被翻译成视障人士的触觉数据。然而，前两项都是研究和开发，我们与国际委员会定义了国际标准盲文代码UEBC。UEBC于2004年4月进行了调整，我们考虑了与我们开发的系统和UEBC的一致性，新的代码定义适用于我们的内部格式。

项目成果

PDF中のテキスト情報を利用した視覚障害者のためのPDF科学技術文書読取りシステム

使用PDF文本信息为视障人士提供PDF科技文档阅读系统

• 发表时间: 2007
• 期刊: 電子情報通信学会 論文誌D Vol.J90-D No.3
• 作者: 金堀利洋;鈴木昌和
• 通讯作者: 鈴木昌和

Semi-auto Translation for Content Notation of Mathematical Formula in XML.

XML 中数学公式内容表示法的半自动翻译。

• 发表时间: 2003
• 期刊: Information Technology Letters Vol.2
• 作者: Nobuyuki OHTAKE;Toshihiro KANAHORI
• 通讯作者: Toshihiro KANAHORI

大武信之, 金堀利洋: "A Conversion Tool for Mathematical Expressions in Web XML files"Journal of Visual Impairment and Blindness. Vol97,Num11. 713-719 (2003)

Nobuyuki Otake、Toshihiro Kanahori：“Web XML 文件中数学表达式的转换工具”《视觉障碍与失明杂志》第 97 卷，第 713-719 期（2003 年）。

An Integrated OCR Software for Mathematical Documents and Its Output with Accessibility

数学文档集成OCR软件及其可访问性输出

• 发表时间: 2004
• 期刊: 9th International Conference, ICCHP 2004, Paris金 LNCS3118
• 作者: 鈴木;金堀;大武;山口
• 通讯作者: 山口

The Development of Unified Japanese Braille Code Based on the Unicode

基于Unicode的统一日语盲文编码的开发

• 发表时间: 2004
• 期刊: Proc.the International Council on English Braille, The Third General Assembly
• 作者: M.Fujiyoshi;K.Yamaguchi;T.Ishida;H.Sawazaki;et al.
• 通讯作者: et al.