基于遥感和GIS的建筑物震害损失评估方法研究与实现

介绍了一种使用遥感技术进行震后损失快速评估的方法,评估流程包括震害提取和损失评估两个部分。评估方式根据需求可以分为基于震害指数的评估和基于图像分类结果的评估两种模式,前者通过震害指数与烈度的关系得到地面居民住地的宏观震害情况,结合地震应急数据进行建筑物损失评估;后者采用图像处理技术,选取典型震害样本以图像分类技术得到地面居民住地的分级分类的震害结果,然后计算参数进行损失评估。损失评估的计算根据震害提取模式而不同。这种遥感震害评估方法和计算流程结合了遥感和GIS技术,以满足实际工作需求目标,提高了震害提取的自动化程度,实现多人工作模式,通过有效率的人机交互来提高遥感震害评估的速度。

Study on loss assessment of construction earthquake damage based on remote sensing and GIS

A quick assessment method of earthquake damage loss based on Remote Sensing(RS) is introduced in the paper,which includes two parts,damage information acquisition and loss assessing.Damage information acquisition contains earthquake damage index mode and image classification mode.The former obtains macro earthquake damage of resident sites on ground through the relationship between damage index and intensity,and the latter uses digital image processing technique to gain the classified earthquake damage.The loss assessment is different according to the different modes of damage information acquisition.This method based on RS and GIS satisfies the actual demand,establishing a multi-person working mode and increasing the speed of earthquake damage assessment based on RS.