Raster File Formats 光栅文件格式 ; 光栅文件格局
It goes beyond 2-d raster formats to include voxel, or 3-d, raster format.
它突破了二维栅格格式，可包括体元(voxel)或三维栅格格式。
It is also very easy to convert from vector to raster formats, but the same ease doesn't hold true vice-versa.
将矢量图转换为光栅图也很简单，可反过来则不行。
Raster image formats store the picture as a bitmap describing the state of pixels, as opposed to recording the length and locations of primitives such as lines and curves.
光栅图像格式将图片存储为描述像素状态的位图，而不是记录图元（譬如，线和曲线）的长度和位置。
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