This doesn't affect the file size as much but requires less memory for the user agent to decompress the image into a pixelmap.
这虽然不大会增加文件大小但对于用户代理来说它需要更少的内存来把图片解压为像素地图。
2
The viewers see themselves on the map; they are either a red or green pixel.
观众在地图上看见的自己要么是红色像素，要么是绿色像素。
3
Similar to the plotting of the world map above, the succeeding command plots large blue ellipses on the state shaded map, while recording the respective pixel coordinates in the image.