文献类型：期刊文献

中文题名：基于遥感数据的水边线提取方法比较——以海南岛为例

英文题名：Comparing Waterline Extraction Methods Based on Remote Sensing Data-Take Hainan Island as Example

作者：苏倩欣[1];李高聪[1];李志强[1];胡鹏鹏[1]

机构：[1]广东海洋大学电子与信息工程学院,广东湛江524088

年份：2022

卷号：41

期号：2

起止页码：20

中文期刊名：海洋技术学报

外文期刊名：Journal of Ocean Technology

收录：CSTPCD

基金：国家自然科学基金资助项目(41676079);广东海洋大学创新强校工程项目(Q18307);广东海洋大学科研启动经费资助项目(060302112010)。

语种：中文

中文关键词：遥感;海南岛;水边线;海岸线;提取方法

外文关键词：remote sensing;Hainan Island;waterline;coastline;extraction method

中文摘要：海岸带是人类活动的重要区域,遥感技术因其优势被广泛应用于海岸带研究,而如何高效地从遥感影像中提取出高精度岸线是海岸带研究的重要问题。本文总结了国内外9种主要水边线提取方法的特点,采用目视解译、阈值分割法(NDWI、MNDWI和SMNDWI)、边缘检测算子法(Sobel、Roberts和Canny)3种最常用的方法提取了2021年海南岛全岛的水边线,对比分析了各方法的提取误差和平面位置精度。三亚湾是海南岛的主要侵蚀岸段,结合区域生长法、Otsu阈值法和Canny边缘检测算子法自动提取其水边线。研究结果表明:Canny、Roberts与SMNDWI的海岸线提取结果精度较高,拟合效果较好;各方法在养殖塘和港口码头等岸线曲折区域存在明显差异;综合方法提取的三亚湾岸线符合实际岸线分布,大陆和岛屿信息完整,具有实用性。未来可在多方法结合、新方法探索、类型岸线的优势方法等方面完善岸线提取方法的研究。

外文摘要：Coastal zone is an important area for human activity.Remote sensing has been widely used in coastal zone research because of its advantages.And how to efficiently extract high-precision coastline from remote sensing images is an important issue in coastal zone research.This paper summarizes the characteristics of nine main water boundary line extraction methods at home and abroad.Then use visual interpretation,threshold segmentation(NDWI,MNDWI and SMNDWI),edge detection operator(Sobel,Roberts and Canny),the three most commonly used methods,to extract the coastline of Hainan Island in 2021,and the extraction errors and plane position accuracy of each method are compared and analyzed.Sanya Bay is the main eroded section of Hainan Island,and its waterline is extracted automatically by combining regional growth method,Otsu threshold method and Canny edge detection operator method.The results show that Canny,Roberts and SMNDWI have higher accuracy and better fitting effect.There were obvious differences among the methods in the areas with winding coastline,such as breeding pond and port.The coastline of Sanya Bay extracted by the combined method accords with the actual coastline distribution,which is practical and has complete information of mainland and island.In the future,the research on coastline extraction method can be improved in the aspects of the combination of multiple methods,exploration of new methods,and superior methods of differ-ent types of coastline.