Computer graphics for the blind

Satoshi Ina
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引用次数: 10

Abstract

This paper presents a tactile hard-copy system which help an "active tactile graphics" for the blind. Here the word "active" means that the blind can make graphics programs and deal with computer graphics by his own efforts. It translates the color graphics on the screen into an embossed dots image on paper. To get a precise embossed dots hard-copy close to the real graphics screen, we adopted a Braille printer plotter. The program stays resident in computer's memory, and a push of COPY key at any time starts to make an embossed hard-copy of the current graphic screen. By this system and computer language like C, the blind can try to make graphics programs and examine the colors and the graphic figures constructing the screen graphics. The system can extract several combinations of colors from the whole graphics selectively and make the hard-copys. This color selective hard-copys help the blind understand the whole graphics as a result, because each hard-copy reduces the complexity of the graphics and tends to be easier to examine by touch.
盲人电脑制图
本文介绍了一种为盲人提供“主动触觉图形”的触觉硬拷贝系统。这里的“主动”一词是指盲人可以通过自己的努力编写图形程序和处理计算机图形。它将屏幕上的彩色图形转换成纸上的凸点图像。为了得到一个精确的压纹点硬拷贝,接近真实的图形屏幕,我们采用了盲文打印机绘图仪。该程序驻留在计算机的内存中,并在任何时候按COPY键开始使当前图形屏幕的压花硬拷贝。通过该系统和C语言等计算机语言,盲人可以尝试编写图形程序,并检查构成屏幕图形的颜色和图形。该系统可以有选择地从整个图形中提取几种颜色组合,并制作硬拷贝。这种颜色选择性的硬拷贝有助于盲人理解整个图形,因为每个硬拷贝都降低了图形的复杂性,并且更容易通过触摸来检查。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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