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器的帮助下，盲人自立的PC(个人计算机)的可用性得到了改善。而且，由于使用了假名汉字转换系统、盲文编辑和盲文自动转录系统，通过印刷品进行视力和盲人之间的交流变得更加容易。但通过带有图形和图表的印刷品进行沟通存在困难。因此，我们在PC上开发了两个系统，以支持有视力的人创建具有触觉图形的盲文印刷品，即(1)触觉图形编辑器(2)用于盲文和触觉图形文档的总打印系统。使用这些系统，我们可以轻松、低成本地生成许多具有流程图等图形的触觉图形和盲文文档。这些系统包括一台盲文打印机-绘图机和一台压花复印机。此外，我们还开发了一个压花硬拷贝系统，将PC屏幕上的图形图像转换为盲文绘图机上的压花网点图像。对于盲人来说，识别绘制在PC屏幕上的图形图像是有用的。

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.