摘要
阐析海岸线修测的技术要点,探讨利用遥感影像自动提取海岸线的技术方法。分析了目前海岸线自动提取方法的可行性和局限性,提出利用地表覆盖类型非监督分类方法的图像处理方法可以简单快速地获取海岸线及其成图需要依托的两侧地图要素,并以常用的Landsat-ETM遥感影像为数据源,对福建九龙江口海岸线进行修测实践,分析修测精度和误差要素。
The technique tips of coastline surveying and coastline retrieved from remote - sensing image are analysed in this paper. Comparing the advantages and disadvantages of some methodologies in retrieving linear feature from remote - sensing, the unsupervised classification (Isodata) of land - coverage processing technique is suggested to utilize for costline surveying, and take the coastline surveying from Landsat - ETM image in Jiulong River estuary as an example. Its survey precision and error factors are also discussed.
出处
《福建水产》
2005年第3期59-62,90,共5页
Journal of Fujian Fisheries