摘要
航测技术在滑坡地质灾害的调查和监测中起到了越来越关键的作用,本文在建立滑坡解译标志的基础上,对长江干流奉节～江津段滑坡灾害区域的航空影像进行滑坡解译,为长江航道防灾减灾提供科学依据;此外,本文对常规的滑坡体目视解译方法进行了改进,利用DEM数据建立决策树,提取坡度为55°～75°的区域作为感兴趣区域,与航空影像叠加后进行重点解译,从而大量减少了目视解译的工作量,提高了解译的效率与质量。
The technology of aerial survey has played an increasingly critical role in the investigation and monitoring of landslides. On the basis of establishment of landslide interpretation signs, the article interprets landside in the aerial images of the landslide hazard area in Fengjie - Jiangjin segment of Yangtze River mainstream, providing the scientific basis for disaster prevention and mitigation of the Yangtze River;In addition, the article does some improvements to the conventional visual interpretation method of the landslide, using the DEM data to build the decision tree, extracts the slope the area of which the slope from 55 ° to 75° as the region of interest, superimposing with the aerial imagery, and then interprets focus on these regions, thereby significantly reducing the workload of the visual interpretation, improving the efficiency and quality of the interpretation.
出处
《城市勘测》
2012年第5期163-167,共5页
Urban Geotechnical Investigation & Surveying
基金
国家自然科学基金(41072246)
关键词
航空影像
滑坡地质灾害
调查
监测
决策树
Aerial imagery
landslides
investigation
monitoring
decision tree
