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Research on an on-line Japanese character input system for visually disabled persons

视障人士在线日文输入系统的研究

基本信息

批准号：
12680381
负责人：
YAMAMOTO Shinji
金额：
$ 1.98万
依托单位：
Toyohashi University of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12680381/
关键词：
On-line character recognition Disabled persons Error correction 日本語入力

项目摘要

We have developed a pen-based Japanese character input system for the visually disabled persons, especially persons with acquired blinds. This system is composed of a character input tablet, a voice synthesizer and character recognition system. The main purpose of this system is to be applied to an electronic mail system for the blind persons. The results we got in this grant term are as follows:(1) Data base construction of the handwritten characters 3216 categories of Japanese characters, totally about 100 thousand characters were gathered from visually disabled persons and blindfold persons.(2) Enhancement of on-line character recognition algorithm Before we started this project, we had already developed an recognition algorithm for about 1000 category Japanese characters (Kyoiku Kanji Category). We enhanced this algorithm to apply 3216 category Japanese characters, including JIS No. 1 level Chinese characters, Hiragana, Katakana, Symbol, Alphabet.(3) Selection of the error correction algorithms of characters by word level knowledge. Three kinds of error correction algorithm were comparatively applied and evaluated. As the result, the Trigram method was found to be a best choice for our purpose.(4) Prototype of man-machine interface device We developed a prototype of man-machine interface device. This device is composed of an electric tablet for writing a character by the right hand, a hand controller for controlling the system condition by the left hand.(5) Document control system for visually disabled persons Document control system in CPU, like file management, document editing, and e-mail receiving/transmitting, was developed.

我们开发了一个基于笔的日语字符输入系统，用于视力残疾人，特别是后天失明的人。该系统由文字输入板、语音合成器和文字识别系统组成。该系统的主要目的是应用于盲人电子邮件系统。（1）手写体汉字数据库的建立。从视障者和盲人中收集到3216类约10万个汉字。(2)在线字符识别算法的增强在我们开始这个项目之前，我们已经开发了大约1000个类别的日本字符（Kyoiku Kanji Category）的识别算法。我们改进了这个算法，使之适用于3216类日文字符，包括JIS No.1级汉字、平假名、片假名、符号、字母。(3)利用字级知识选择字符纠错算法。对三种纠错算法进行了比较应用和评价。因此，三元组方法被认为是我们的目的的最佳选择。(4)人机接口装置的原型我们开发了一个人机接口装置的原型。该装置由一个用右手书写字符的电子书写板和一个用左手控制系统状态的手控器组成。(5)为视障人士提供的文件管理系统开发了CPU中的文件管理系统，如文件管理、文件编辑和电子邮件接收/发送。