测绘通报 ›› 2018, Vol. 0 ›› Issue (8): 88-92.doi: 10.13474/j.cnki.11-2246.2018.0251

• 技术交流 • 上一篇    下一篇

结合倾斜摄影技术的地质灾害监测

郑史芳, 黎治坤   

  1. 广东省国土资源测绘院, 广东 广州 510000
  • 收稿日期:2018-05-03 修回日期:2018-07-02 出版日期:2018-08-25 发布日期:2018-08-30
  • 作者简介:郑史芳(1986-),女,工程师,主要从事倾斜摄影测量技术方面研究工作。E-mail:214602911@qq.com

Geohazard Monitoring Based on Tilt Photography

ZHENG Shifang, LI Zhikun   

  1. Guangdong Provincial Land and Resources Institute, Guangzhou 510000, China
  • Received:2018-05-03 Revised:2018-07-02 Online:2018-08-25 Published:2018-08-30

摘要: 面向广东省地质灾害隐患的灾前预警、灾中评估与灾后重建等灾害防治与救灾抢险工作的需求,基于md4-1000四旋翼无人机系统,探索研究了基于倾斜摄影技术的地质灾害监测技术流程和方法,并对其模型精度进行考察。经试验表明,无人机可以在一定范围内快速获取高空间分辨率、多个角度的航空影像,而基于实景三维进行地质灾害预警与监测,可以通过无人机倾斜摄影获取的影像经过空三加密和绝对定向建立实景三维模型和真正射影像,可以减少人工实地勘察的工作量,提高工作效率。同时通过实景三维模型可以直观反映地质灾害隐患点的地形地貌信息,为地质灾害隐患点预警提供有力的依据。通过实测数据表明,整个项目的模型高程精度优于0.5.m,平面精度优于0.2.m。

关键词: 倾斜摄影, 地质灾害监测, 无人机, 遥感

Abstract: This paper addresses the needs of pre-disaster warning,disaster assessment,and post-disaster reconstruction and other disaster prevention and rescue work for geological hazards in Guangdong province.Based on the md4-1000 quad-rotor UAV system,this paper explores and studies geological disasters based on oblique photography technology,monitors technical processes and methods and examines the accuracy of their models.Experiments have shown that drones can quickly acquire aerial images with high spatial resolution and multiple angles within a certain range,and based on real-world three-dimensional geohazard warning and monitoring,images captured by drone tilt photography can pass through the airspace.Encryption and absolute orientation establish a real three-dimensional model and real shot images,which can greatly reduce the workload of manual field surveys and improve work efficiency.At the same time,the three-dimensional model of real scenery can be very intuitive to reflect the topographic information of geological hazard hazards.The early warning of disaster hidden points provide a very powerful basis.Through actual measurement data,it is verified that the accuracy of the entire model is better than 0.5 meters,and the plane is better than 0.2 meters.

Key words: tilt photography, geological disaster monitoring, unmanned aerial vehicle, remote sensing

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