基于Sentinel-1数据的双鸭山市水体信息提取

Water Information Extraction in Shuangyashan City Based on Sentinel-1 Data

合成孔径雷达在水体提取方面具有得天独厚的优势。本文基于Sentinel-1数据,通过SDWI和面向对象方法对双鸭山市进行了水体提取,同时通过DEM地形建模去除了山体阴影对水体提取的影响,提高了水体提取精度。结果表明,面向对象的水体提取精度和效果优于SDWI方法,受山体阴影的影响也更小。

Synthetic Aperture Radar has unique advantages in water extraction. In this paper, based on Sentinel-1 data, water is extracted by SDWI and object-oriented methods in Shuangyashan city, meanwhile the influence of mountain shadows on water extraction is removed by DEM terrain modeling, and the accuracy of water extraction is improved. The results show that the accuracy and effect of object-oriented water extraction are better than SDWI method, and it is also less affected by mountain shadows.