海岸线卫星遥感提取方法研究

Means of withdrawing coastline by remote sensing

海岸线位置的确定是海岛海岸带遥感调查的重要环节。本文以辽宁省大连、营口地区的海岸为研究对象,提出了根据不同海岸类型的地貌特点对卫星图像中海岸线的解译方法;借助数字图像处理技术对不同类型海岸的图像进行针对性的预处理,使用IDL语言实现Canny算子、中值滤波器和腐蚀算子,完成了对卫星图像中海岸线的自动提取;证明了使用潮位高度与卫星图像结合计算坡度的方法并应用于海岸线位置的校正。

The coastline position determination is the island coastal zone remote sensing investigation important link, This article take the Liaoning Province Dalian, Yingkou area seacoast as the object of study, proposing the interpretation method about the coastline on the basis of different seacoast type landform characteristic from the satellite imagery;carried on the special pretreatment with the aid of the digital image processing technology to the different type seacoast image, used the IDL to realize the Canny operator.median filter and Erosion operator,realized to the satellite imagery in coastline automatic withdrawing;proving the method of computing slope to unify the tide level and the satellite imagery.