基于无人机遥感的海岸线提取与测量方法

Coastline Extraction and Measurement Method Based on UAV Remote Sensing

面对复杂的海岸线地质结构,传统依靠卫星影像和人工施测的方法难以快速准确进行海岸线提取与监测。本文以无人机遥感的手段,高效获取分辨率较高的海岸线低空影像,生产DEM、DOM数据,结合当地潮位信息,快速准确地进行了海岸线范围提取与量测。针对砂质海岸线开展了航拍实验,经与痕迹线进行对比,得出本文的海岸线提取方法能较好地与实测结果相匹配,仅局部细微处出现差异,海岸线测量精度满足动态监测要求,可较好地应用于资源管理部门。

In the face of complex coastline geological structure,it is difficult to extract and monitor coastline quickly and accurately by traditional methods relying on satellite images and artificial survey.In this paper,by means of UAV remote sensing,high-resolution coastline low-altitude image is obtained efficiently,DEM and DOM data are produced.Combined with the local tide level information,the coastline range is extracted and measured quickly and accurately.According to the sandy coastline,the aerial photography experiment is carried out.By comparing with the trace line,it is concluded that the Coastline Extraction Method in this paper can better match with the measured results,and only some slight differences appear.The accuracy of coastline measurement can meet the requirements of dynamic monitoring and can be better applied to resource management departments.