1. The image is stored in raster format, which allows for easy manipulation of individual pixels.
图像以栅格格式存储，可以方便地操纵每个像素。
2. The rasterization process converts vector graphics into a raster image that can be displayed on a screen.
光栅化过程将矢量图像转换为可在屏幕上显示的栅格图像。