该技术旨在将扫描的工程图像转换为与CAD系统相兼容的矢量数据格式。
Engineering drawing recognition technique aims at converting scanned engineering drawing images into vector formats compatible with CAD systems.
该库为编程人员提供了通用的数据模型,包括所有栅格数据格式和矢量数据格式(通过 OGR)。
The library gives programmers a common data model covering all raster data formats and -- through OGR -- vector data formats.
数字栅格图和数字线划图是可以低成本获取的两种数字地图,而DLG是目前最普遍的矢量数据格式,是GIS的主要数据来源。
Digital raster graphic(DRG) and digital line graphic(DLG) are two digital maps that can be taken cheaply, and DLG is a commonest data format now, it is the main data source of GIS.
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