VGA彩色图象的打印

PRINTING VGA COLOR IMAGE

本文通过对VGA在13Hex模式下工作原理的分析,将在该方式下截取的256色彩色图象灰度化后,利用抖动矩阵将图象数据转换成点阵数据,通过打印机输出,并可调节输出图象的亮度和对比度,实现了高分辨率彩色图象的二值打印。另外,本文还提供了一种将打印点阵转换成WPS的图文编辑软件SPT能够识别的图象文件的方法,可利用SPT对该图象进行编辑,修改等图象处理工作。

By analysing VGA work principle in 13hex mode, greying 256 color image cut in this mode, translating image data into dot array data in dither array, outputing in printer adjustable brightness and contrast of output image, this article realise black - white print of high resolution color image. Another, the article provide a method that translate print dot array into image file, it can be recognized by WPS's picture -text editor-SPT, by using SPT, you can do image process such as edit, modify.