Construction of 3D models of buildings damaged by earthquakes using UAV aerial images
Construction of 3D models of buildings damaged by earthquakes using UAV aerial images
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发表时间：
2015
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通讯作者：
F. Yamazaki;T. Matsuda;S. Denda;Wen Liu
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作者：
F. Yamazaki;T. Matsuda;S. Denda;Wen Liu
无人机（UAV）由于其对目标的可接近性、调度的快速性和获取的图像的高空间分辨率而近年来变得非常流行。在这项研究中，作者试图从空中和地面获得数字图像的倒和冲走的建筑物在日本宫城县女川镇，由于2011年东北地震和海啸。在这次航测中使用了一架小型多旋翼无人机。然后利用运动恢复结构（SfM）技术在计算机上构建三维模型。当空中和地面图像都用于3D建模时，制作的模型最准确。作为第二个例子，从无人机拍摄的空中视频被用来模拟2015年4月25日尼泊尔加德满都Mw7.8 Gorkha地震的受灾地区。这段视频是由加拿大人道主义组织拍摄的，并在互联网上发布。3D模型是根据视频片段开发的，它们显示了市区受损情况的细节。
Unmanned aerial vehicles (UAVs) are becoming very popular recently due to their accessibility to targets, promptness of dispatch, and high-spatial resolution of acquired images. In this study, the authors tried to obtain digital images from air and ground for a turned-down and washed-away building in Onagawa Town, Miyagi Prefecture, Japan due to the 2011 Tohoku earthquake and tsunami. A small multirotortype UAV was used in this aerial survey. Then 3D models were constructed in computer using the acquired images based on the Structure-from-Motion (SfM) technique. The most accurate model was made when both the aerial and ground images were used for 3D modelling. As the second example, an aerial video taken from UAVs was used to model affected districts in Kathmandu, Nepal, due the Mw7.8 Gorkha earthquake on April 25, 2015. The video was taken by the Canadian humanitarian organization and released on Internet. The 3D models were developed from the video footage, and they show the details of damage situation in the urban districts.