它突破了二维栅格格式，可包括体元(voxel)或三维栅格格式。
It goes beyond 2-d raster formats to include voxel, or 3-d, raster format.
栅格格式数据转换为矢量格式数据时必须提取原图像上包含的拓扑信息。
Is is necessary to abstract the topology information from preprocessed image while converting grid data into vector data.
矢量格式数据和栅格格式数据的相互转换技术是实现GIS、RS结合的关键。
The key to realize the combining process of GIS and RS is the technique of format conversion between vector data and grid data.
矢量格式数据和栅格格式数据的相互转换技术是实现GIS、RS结合的关键。
The key to realize the combining process of GIS and RS is the technique of format conversion between vector data and grid data.
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