测绘通报2023年第6期引文格式:刘敏,黄金辉,彭振华,等.利用0.5m分辨率卫星数据提取深圳市内浅水水体[J].测绘通报,2023(6):146-149.DOI:10.13474/j.cnki.11-2246.2023.0184.利用0.5m分辨率卫星数据提取深圳市内浅水水体刘敏,黄金辉,彭振华,吴震宇(广东省国土资源技术中心,广东广州510030)摘要:以国产高景卫星影像为数据源,选取了深圳市内海岸浅水区、水库浅水区作为研究对象,针对浅水区域因底质的影响使近岸水体与沿岸土沙光谱反射率较为接近,导致水体边界提取难度大、精度差的难题,利用改进的变异系数法筛选水体指数,再结合DEM数据修正水体边界线并去噪,较精确地获取了浅水区水体边界。结果表明,本文方法对0.5m分辨率卫星影像上的海岸浅水区、水库浅水区判别的总体精度分别为98.57%、91.10%,浅水区域水体提取的精度和稳定性得到了明显提高。关键词:高分辨率卫星影像;DEM数据;浅水区;水体指数中图分类号:P237;P208文献标识码:A文章编号:0494-0911(2023)06-0146-04ExtractionofshallowwaterbodiesinShenzhenusing0.5mresolutionsatellitedataLIUMin,HUANGJinhui,PENGZhenhua,WUZhenyu(GuangdongLandandResourcesTechnologyCenter,Guangzhou510030,China)Abstract:TakingthedomesticSuperViewsatelliteimagesasthedatasource,thecoastalshallowwaterarea,reservoirshallowwaterareainShenzhenareselectedastheresearchobjects,duetotheinfluenceofthesubstrateintheshallowwaterarea,thereflectanceofcoastalwaterandcoastalsoilisclose,whichcausesthedifficultyandpooraccuracyofwaterboundaryextraction.Usingtheimprovedcoefficientofvariationmethodtoscreenthewaterindex,combinedwithDEMdatatomodifythewaterboundarylineanddenoise,theshallowwaterboundaryisobtainedmoreaccurately.Theresultsshowthattheoverallaccuracyofdiscriminationofcoastal,reservoirshallowwaterinthe0.5mresolutionsatelliteimagesis98.75%and91.10%respectively,theaccuracyandstabilityofshallowwaterextractionaresignificantlyimproved.Keywords:high-resolutionsatelliteimages;DEMdata;shallowwater;waterbodyindex水是自然界的重要组成物质,水资源是人类在生产和生活中广泛利用的资源。准确、快速地提取水体的空间分布信息,对全面了解水体变化规律和演化趋势具有重要意[1]。随着遥感技术的飞速发展,许多学...