Study of computer environment and human interface for visully impaired people

近年来，在屏幕阅读器和盲文显示的帮助下，为盲人提供的个人电脑（PC）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，明眼人与盲人之间的印刷品交流变得更加容易。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，以支持视力正常人士制作带有触觉图形的盲文印刷品，即(1)触觉图形编辑器(2)带有盲文和触觉图形的文件的整体打印系统。有了这些系统，我们可以很容易地以低成本制作许多带有流程图的触觉图形和盲文文档。这些系统包括一个盲文打印机-绘图仪和一个压花复印机。此外，我们还开发了一种压纹硬拷贝系统，将PC屏幕上的图形图像转换为盲文绘图仪上的压纹点图像。对于盲人来说，识别电脑屏幕上的图形图像是很有用的。

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.