雷达遥感建筑物震害信息提取方法综述

A Review on the Methods of Earthquake-induced Building Damage Information Extraction from SAR Images

合成孔径雷达遥感具有全天时、全天候工作的能力,在地震灾害应急中发挥了重要作用。回顾了雷达遥感建筑物震害信息提取技术的发展历史,总结了各种用于建筑物震害信息提取的雷达卫星的参数特征以及使用雷达遥感提取建筑物震害信息的震例。介绍了目前应用的各种雷达遥感建筑物震害信息提取方法,包括目视解译和计算机自动信息提取两种,其中后者包括基于纹理特征和极化特征的单时相方法、基于强度特征和相干特征的多时相方法。比较了这些方法的适用性和不足,并探讨了雷达遥感建筑物震害信息提取方法的发展趋势。

The capabilities such as weather-and-sunlight independence make synthetic aperture radar（SAR） become a powerful tool to earthquake emergency response.This paper show a summary of the parameters of the SAR systems that have been used to extract earthquake-induced building damage information,and the earthquake cases in which the SAR images have been used to monitor disaster,also gives a comprehensive introduce to all kinds of methods of extracting earthquake-induced building damage from SAR images.These methods are classified into visual interpretation and automatically information extraction by computer.The latter includes the single-temporal method with textuure and polarization features,and multi-temporal method with intensity and coherence features.All of these methods were compared to find their disadvantanges and this paper discussed the development of the methods of earthquake-induced building damage information extraction.