Abstract：The flood disaster，with its high frequency and great harm，seriously endangers the safety of human life and property，making its monitoring an emergency.At the end of June of 2017，the most serious rainfall ever occurred in Ningxiang，Hunan Province and caused serious flood disaster.This paper chooses Sentinel\|1A SAR data before and after the disaster to do some monitoring by doublet method based on GMM，Otsu algorithm and region growing method.The results will be compared with the flood inundation region from In-SAR to make an evaluation of pros and cons.The experiment shows that the doublet method based on statistics works the worst due to its lowest recall and precision rate.Otsu algorithm and region growing method have roughly equivalent accuracy.Otsu algorithm has a little higher recall rate and a little lower precision rate than region growing method.
郭欣,赵银娣. 基于Sentinel-1A SAR的湖南省宁乡市洪水监测[J]. 遥感技术与应用, 2018, 33(4): 646-656.
Guo Xin,Zhao Yindi. Floodinundation Monitoring in Ningxiang of Hunan Province based on Sentinel-1A SAR. Remote Sensing Technology and Application, 2018, 33(4): 646-656.