基于LiDAR的强度影像自动提取水系边线研究  

Research on Automatic Extraction of Water System Boundaries Based on LiDAR Intensity Images

作　　者：张名华 崔靓[2] 徐花芝[2] 武稳苍 张艳峰[2] ZHANG Minghua;CUI Liang;XU Huazhi;WU Wencang;ZHANG Yanfeng(Longkou Natural Resources and Planning Bureau,Yantai 265700,China;Shandong Provincial Institute of Land Surveying and Mapping,Jinan 250013,China;Shandong Dongfang Daoer Digital Data Technology Co.,Ltd.,Jinan 250013,China)

机构地区：[1]龙口市自然资源和规划局,山东烟台265700 [2]山东省国土测绘院,山东济南250013 [3]山东东方道迩数字数据技术有限公司,山东济南250013

出　　处：《测绘与空间地理信息》2024年第9期175-177,181,共4页Geomatics & Spatial Information Technology

摘　　要：对基于LiDAR强度影像自动提取水系边线的方法进行深入研究,并通过在实际实验区域的实践应用,验证该方法独特优势与高精度表现。水系边线作为自然地理环境中主要特征,其精确提取对于水资源管理、洪水风险评估及地理信息系统更新来讲尤为重要。在实验过程中,利用LiDAR强度影像的独特特性,对激光脉冲的强吸收性导致无回波信号区域,作为水系边线初步识别主要依据,结合先进边缘检测算法,可有效从LiDAR强度影像中提取出水系边线。This paper conducts in-depth research on the method of automatically extracting water system boundaries based on LiDAR(Light Detection and Ranging)intensity images,and verifies the unique advantages and high-accuracy performance of this method through practical application in actual experimental areas.The accurate extraction of water system boundaries,as the main feature in the natural geographical environment,is particularly important for water resource management,flood risk assessment,and geographic information system updating.During the experiment,by utilizing the unique characteristics of LiDAR intensity images,the strong absorption of laser pulses leads to non-receiving echo signals in some areas,which serves as the main basis for preliminary identification of water system boundaries.Combined with advanced edge detection algorithms,water system boundaries can be effectively extracted from LiDAR intensity images.

关 键 词：LiDAR强度影像 自动提取 水系边线 

分 类 号：P225.1[天文地球—大地测量学与测量工程]