基于OSTU算法利用新型水体指数进行Landsat数据自适应阈值水体自动提取研究

A New Water Index Extracting Water Information Automatically from Landsat Based on OSTU

利用Landsat数据,结合NDWI与MNDWI提取水体信息的特点提出了一种新的水体指数NMWI,并结合OSTU算法自适应地确定最佳分割阈值,完成了对海洋、河流、湖泊和水库4种主要的典型水体信息的自动提取,均取得了较好的效果。

In this paper,a new water body index NMWI was proposed combining with the characteristics of NDWI and MNDWI on water body information extraction,and then based on the OSTU algorithm adaptively determining the optimal segmentation threshold completed the automatic extraction of information of the oceans,rivers,lakes and reservoirs in the four main types of typical water,using Landsat data.