Classification and information extraction of plateau landform based on IRS-P6 satellite image
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摘要: 利用遥感影像进行地形地貌制图,因其成图周期短、制图精度高、修改方便和更新快捷等优势,现已成为中小比例尺地貌制图的主要方法。利用高分辨率的IRS-P6卫星影像对青海省天峻县的高原地貌进行分类与信息提取,并制作大比例尺地貌图。采用遥感( remote sensing,RS)和GIS技术对遥感数据和不同来源的辅助数据进行处理,将其统一到同一GIS平台,在此基础上详细阐述了地貌分类、信息提取的技术流程和地貌图制作的方法。研究表明,基于高分辨率遥感影像数据,采用RS和GIS相结合的技术,可以大大降低地貌分类的难度,提高地貌信息提取与制图的速度和效率。Abstract: Compiling geomorphologic map by using remote sensing image has become a main method in the production of medium and small scale map because of its short period, high precision and the fact that it’ s easy to modify and quick to update. The purpose of this paper is to classify the plateau landform, extract the landform information and compile geomorphologic map by using higher resolution IRS-P6 satellite image in Tianjun County, Qinghai Province. Firstly, RS and GIS technology are used to process the remote sensing image and various sources reference data in order to unify them to the same GIS platform. Secondly, technological methods of the plateau landform information classification and the geomorphologic map compilation with large scale are illustrated in detail. Experiments and practice show that using RS and GIS technology platform can greatly reduce the difficulty of landscape classification and improve the speed and efficiency of landform information classification and map compil-ation.
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Key words:
- IRS-P6 /
- GIS /
- remote sensing /
- Tianjun County /
- plateau landform /
- information extraction
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