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.
基于矢量的数据格式的出现改变了GIS专家的生活。
Life changes for the GIS specialist when vector-based data formats appear.
介绍了CT图像的反求步骤、数据格式转换、图形矢量化技术在边缘强化过程中的应用。
It also introduces the application of reverse approach, transition of data format and figure vector technique of ct image in process of edge intensifying.
介绍CT图像的反求步骤、数据格式转换、图形矢量化技术在边缘强化过程中的应用。
The study introduces the application of reverse approach, transition of data format and figure vector technique of CT image in process of edge intensifying.
导入和导出矢量数据及栅格数据，实现多种GIS数据格式之间的转换。
Import and export vector and raster data, convert between different GIS data formats.
矢量和栅格是GIS应用中两种基本的地学数据格式。
Vector and raster are two basic formats of geospatial data used in GIS.
空间数据处理内容广泛，本文选择空间数据处理领域的矢量数据结构与栅格数据结构之间的相互转换、不同空间数据格式的数据转换方法等几个方面作为研究的内容。
Some parts have been researched which are approach for mutual transferring between vector structure and raster structure, the switchover of different data format. This thesis has three parts.
通过分析彩色图像的数据格式，将八叉树量化方法用于彩色图像的颜色信息量化，并采用矢量中值滤波消除彩色图像噪声，以实现对彩色图像的合理预处理。
Then the experimental results show that the vector median filtering algorithm based on PCNN and HIS not only can effectively remove the noise, but also can protect the details of color image better.
通过分析彩色图像的数据格式，将八叉树量化方法用于彩色图像的颜色信息量化，并采用矢量中值滤波消除彩色图像噪声，以实现对彩色图像的合理预处理。
Then the experimental results show that the vector median filtering algorithm based on PCNN and HIS not only can effectively remove the noise, but also can protect the details of color image better.
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