基于Q-OTSU算法高分三号水体快速提取方法研究——以河南鹤壁洪涝灾害监测为例

P426.616%X43; 最大类间方差法(OTSU)算法是一种确定图像二值化分割阈值算法,其用于合成孔径雷达(SAR)影像中进行地物目标快速提取有突出的优势.本文提出一种优化的OTSU算法(Quick-OTSU,Q-OTSU),可以快速提取SAR影像中的水体信息,满足洪涝灾害快速应急需求.2021年7月,河南省遭受持续性强降雨,引发特大洪涝灾害,本文采用多景国产高分三号卫星(GF-3)不同时相SAR数据,采用Q-OTSU阈值分割法快速提取河南省鹤壁市受灾区域水体信息,同时利用同期哨兵二号(Sentinel-2B)影像进行精度验证,分析受灾区域灾害情况.在获取影像24 h内就完成了水体信息提取...

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Published in自然灾害学报 Vol. 31; no. 4; pp. 134 - 143
Main Authors 沈兰芝, 谌华, 范凤云, 王泽宇, 于飞
Format Journal Article
LanguageChinese
Published 二十一世纪空间技术应用股份有限公司,北京100096 01.08.2022
Subjects
洪涝灾害
快速监测
高分三号
Q-OTSU算法
水体信息
Online AccessGet full text
ISSN1004-4574
DOI10.13577/j.jnd.2022.0413

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Abstract P426.616%X43; 最大类间方差法(OTSU)算法是一种确定图像二值化分割阈值算法,其用于合成孔径雷达(SAR)影像中进行地物目标快速提取有突出的优势.本文提出一种优化的OTSU算法(Quick-OTSU,Q-OTSU),可以快速提取SAR影像中的水体信息,满足洪涝灾害快速应急需求.2021年7月,河南省遭受持续性强降雨,引发特大洪涝灾害,本文采用多景国产高分三号卫星(GF-3)不同时相SAR数据,采用Q-OTSU阈值分割法快速提取河南省鹤壁市受灾区域水体信息,同时利用同期哨兵二号(Sentinel-2B)影像进行精度验证,分析受灾区域灾害情况.在获取影像24 h内就完成了水体信息提取,精度达到96.7％.研究结果表明:本文提出的Q-OTSU算法应用于国产高分三号数据水体提取中,精度高,可高效快速进行洪水灾情评估,能够为政府和相关部门及时、精确地掌握洪灾信息,科学防灾救灾提供了决策依据.
AbstractList P426.616%X43; 最大类间方差法(OTSU)算法是一种确定图像二值化分割阈值算法,其用于合成孔径雷达(SAR)影像中进行地物目标快速提取有突出的优势.本文提出一种优化的OTSU算法(Quick-OTSU,Q-OTSU),可以快速提取SAR影像中的水体信息,满足洪涝灾害快速应急需求.2021年7月,河南省遭受持续性强降雨,引发特大洪涝灾害,本文采用多景国产高分三号卫星(GF-3)不同时相SAR数据,采用Q-OTSU阈值分割法快速提取河南省鹤壁市受灾区域水体信息,同时利用同期哨兵二号(Sentinel-2B)影像进行精度验证,分析受灾区域灾害情况.在获取影像24 h内就完成了水体信息提取,精度达到96.7％.研究结果表明:本文提出的Q-OTSU算法应用于国产高分三号数据水体提取中,精度高,可高效快速进行洪水灾情评估,能够为政府和相关部门及时、精确地掌握洪灾信息,科学防灾救灾提供了决策依据.
Author 王泽宇
于飞
谌华
沈兰芝
范凤云
AuthorAffiliation 二十一世纪空间技术应用股份有限公司,北京100096
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SHEN Hua
YU Fei
WANG Zeyu
FAN Fengyun
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DocumentTitle_FL Research on rapid extraction method of water based on Q-OTSU algorithm using domestic GF-3 image:A case of flood disaster monitoring in Hebi,Henan Province
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Keywords 洪涝灾害
快速监测
高分三号
Q-OTSU算法
水体信息
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Title 基于Q-OTSU算法高分三号水体快速提取方法研究——以河南鹤壁洪涝灾害监测为例
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