面向对象的乌金塘水库水体提取研究分析  

Research and Analysis of Object-Oriented Water Extraction in Wujintang Reservoir

作　　者：刘迎波 LIU Yingbo(Liaoning Natural Resources Affairs Service Center,Jinzhou 121000,China)

机构地区：[1]辽宁省自然资源事务服务中心,辽宁锦州121000

出　　处：《测绘与空间地理信息》2023年第3期128-130,共3页Geomatics & Spatial Information Technology

摘　　要：水是生命的源泉,是人类赖以生存和发展不可缺少的最重要的物质资源之一。在人类利用的水资源中,地表水占较大比例,对人类的生产生活具有重要影响,因此,对其进行精确提取具有重要意义。针对传统的遥感数据提取水体方法需要近红外波段、中红外波段等丰富的光谱信息,以及单独考虑光谱信息或者空间信息等问题,本文通过研究分析Landsat-8卫星影像中水库水体的光谱和空间特征,提出一种基于规则的面向对象信息对乌金塘水库水体进行提取的方法。规则中利用了单波段阈值法、水体指数阈值法和空间面积阈值法。实验结果表明,本文提出的方法较好地去除了山体阴影的影响,并且最终提取水体的精度比较高,该方法能够应用于其他山区面状水体的提取。Water is the source of life and one of the most important material resources indispensable for human survival and development.Among the water resources used by human beings,surface water accounts for a large proportion,which has an important impact on human production and life,so accurate extraction of it is of great significance.Aiming at the traditional remote sensing data extraction methods that require rich spectral information in the near-infrared and mid-infrared bands,as well as individual consideration of spectral information or spatial information,this paper analyzes the spectral and spatial characteristics of the reservoir water in the Landsat 8 satellite imagery,and proposes a rule-based object-oriented information extraction method for the water body of Wujintang reservoir.The single band threshold method,water index threshold method and space area threshold method are used in the rules.Experimental results show that the method proposed in this paper can well remove the influence of mountain shadows,and the final water body extraction accuracy is relatively high.This method can be applied to the extraction of surface water bodies in other mountainous areas.

关 键 词：面向对象 水体提取 单波段阈值法 水体指数阈值法 空间面积阈值法 

分 类 号：P237[天文地球—摄影测量与遥感]