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我们知道 VGA 显示卡的16色图形模式的分辨率可以高达640*480,但只是用来显示16级灰度的灰度图像,图像的空间分辨率较高。但亮度分辨率不足。而 VGA 显示卡的256色显示模式(即模式13H)的分辨率只有320*200,却能同时显示256种颜色,其中可有64级灰度显示,其余颜色可作为伪色彩等用途,因此图像的空间分辨率不高,而亮度分辨率较高。结
We know that VGA graphics card 16-color graphics mode resolution up to 640 * 480, but only used to display grayscale 16-level gray-scale images, the spatial resolution of the image is higher. However, the brightness resolution is not enough. VGA display card 256 color display mode (mode 13H) resolution of only 320 * 200, but it can display 256 colors, of which there can be 64 gray-scale display, the remaining color can be used as a pseudo-color and so the image The spatial resolution is not high, while the brightness resolution is higher. Knot