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Research on the key technology of Open GIS based spatial information analysis and publishing — Take the example of the marine oil spilling monitoring information analysis publishing system

机译：基于开放式GIS的空间信息分析与发布关键技术研究-以海洋溢油监测信息分析与发布系统为例

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With the frequent occurrence of marine oil spills, there is a growing demand for analyzing and publishing oil spill disaster information. It's a trend to research on the Open GIS based spatial information analysis and publishing. This article develops the Marine oil spilling monitoring information analysis & publishing system based on DotSpatial, the upgrade version of the open-source .NET development of component library. In this system, the oil spilling monitoring information is visualized, rendered, analyzed, and finally published to the web. However, open GIS is functionally limited and instable. It can not read the spatial information of RS images well, and the mapping and outputting module is unstable. This article solves some technical problems. For example, the spatial data are processed such as re-projected via GDAL (Geospatial Data Abstraction Library) to match the images layers with the vector layers. Vector oil spots data are generated and rendered, and the major axis and minor axis are drawn. Moreover the map extent to output can be determined by dragging a rectangle by GDI+, and the decorating of the map to putout is also improved. By adopting several developing method comprehensively, this article does research on the system development based on Open GIS platform to provide reference for other similar system researches and developments of spatial information expression and analysis.
机译：随着海上溢油事故的频繁发生，对分析和发布溢油事故信息的需求日益增长。研究基于开放式GIS的空间信息分析和发布是一种趋势。本文开发了基于DotSpatial的海洋溢油监视信息分析和发布系统，该系统是组件库的开源.NET开发的升级版本。在该系统中，可以对漏油监控信息进行可视化，渲染，分析，然后最终发布到Web上。但是，开放式GIS在功能上有限且不稳定。不能很好地读取RS图像的空间信息，映射输出模块不稳定。本文解决了一些技术问题。例如，对空间数据进行处理，例如通过GDAL（地理空间数据抽象库）进行重新投影，以将图像层与矢量层进行匹配。生成并绘制矢量油斑数据，并绘制长轴和短轴。此外，可以通过使用GDI +拖动矩形来确定要输出的地图范围，并且还可以改善对输出的地图装饰。本文通过综合采用几种开发方法，对基于Open GIS平台的系统开发进行了研究，为空间信息表达与分析的其他类似系统研究和开发提供参考。

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