Study of computer environment and human interface for visully impaired people

近年来，通过屏幕阅读器和盲文显示器的帮助，盲人的个人电脑（个人电脑）的可用性得到了改善。通过使用假名-汉字转换系统、盲文编辑器和盲文自动转录系统，盲人和盲人之间通过印刷品进行交流变得更加容易。但是，通过带有图形和图表的印刷品进行交流存在困难。因此，我们在个人电脑上开发了两个系统，以支持有视力的人创建盲文印刷品与触觉图形，(1)a触觉图形编辑器（2）用于带有盲文和触觉图形的文档的完整打印系统。利用这些系统，我们可以以低成本，方便地制作出许多触觉图形和带有流程图等图形的盲文文档。这些系统包括一台盲文打印机和一台凸印复印机。此外，我们还开发了一个浮雕硬拷贝系统，它将PC屏幕上的图形图像转换为盲文机上的浮雕点图像。对于盲人来说，识别计算机屏幕上绘制的图形图像是非常有用的。

In recent years, the availability of PC(Personal Computer) for the blind persons to support themselves has been improved by the help of screen reader and braille display. And communication between sighted persons and blind persons through the printed matters has become easier by the use of kana-kanji transformation system, braiile editor and automatic transcription system into Braille. But there are difficulties in communication through printed matters with graphics and charts. So we have developed two systems on PC to support sighted persons to create braille printed matters with tactile graphics, i.e.(1)a tactile graphics editor (2)a total printing system for documents with braille and tactile graphics. With these systems we can produce many tactile graphics and braille documents with graphics like flow-chart easily and at low cost. These systems includes a braille printer-plotter and an embossed copy machine. Moreover we have developed a embossed hard copy system, which transforms a graphic image on PC screen onto a embossed dot image on braille plotter. It is useful to recognize a graphic image drawn on PC screen for the blind.