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[转载]【计算机科学】【2016.09】基于无人驾驶飞行器的游戏引擎深基坑可视化

已有 361 次阅读 2020-1-18 18:09 |系统分类:科研笔记|文章来源:转载

本文为土耳其中东技术大学(作者:TüRKER TEKE)的硕士论文,共100页。

 

在过去的二十年里,随着监控工具的进步和信息技术的不断应用,建筑工地的可视化程度得到了提高。这一领域的挑战是开发一种能力广泛的工具,用于安全检查、进度监测和质量控制。从这个意义上说,岩土工程师需要全面了解现场条件,包括地形、土壤条件、附近结构的影响等。

 

在本研究中,游戏引擎被提出作为可视化工具,在无人驾驶飞机(UAV)拍摄的图像形成的虚拟环境中与现场交互。选择深基坑作为试验案例,根据监测活动采取措施,可防止灾难性破坏。此外,为了保证施工现场的质量,在开挖过程中达到深层次一直是一个挑战。为了克服这些挑战,使用了带有各种传感器的无人机来捕捉网络图像。在这项研究中,由于照片本身缺乏几何信息,并且不能提供完整的图像,因此提出了从运动结构和多视角立体算法来创建高度密集和彩色的点云。由于点云的交互性可能不足以进行检测,因此通过网格划分对其进行进一步处理,然后采用游戏引擎将其作为场景导入到虚拟世界,为工程师提供一个交互性环境。该产品已在土耳其安卡拉的两个深基坑进行了成功的试验。有希望的结果表明,该游戏产生了足够的建筑和地形细节,这为工程师提供了一种调查挖掘的方法。该研究具有广阔的发展前景,可以将开发的工具应用于工程师教育中,并与现有的软件工具相结合,使其具有更强的能力。

 

In the last two decades, the advancementsin monitoring tools and growing use of information technologies lead to bettervisualization of construction sites. The challenge in this field is to developan extensively capable tool for safety check, progress monitoring and qualitycontrol. In this sense, Geotechnical Engineers need a comprehensiveunderstanding of field conditions, which includes topography, soil conditions,effect of nearby structures, etc. In this study, game engines are proposed asvisualization tools to interact with the site on a virtual environment formedby the images taken by Unmanned Aerial Vehicles (UAVs). Deep excavations arechosen as test cases where catastrophic failures can be prevented by takingmeasures according to monitoring activities. In addition, reaching to deeplevels in the excavations for quality assurance is always a challenge at theconstruction site. To overcome such challenges, UAVs with various sensors areused to capture images of the site. In this study, as photographs inherentlylack geometric information and does not provide a full imagery, Structure FromMotion and Multi View Stereo algorithms are proposed to create a highly denseand colored point cloud. As the cloud may not be interactive enough forinspection, it is further processed through meshing, then imported as a sceneinto a virtual world via game engines to provide an interactive environment forthe engineers. The developed product is successfully tested on two deepexcavation sites located in Ankara, Turkey. Promising results show that thegame produces sufficient details of construction and topography, which providesengineers a way to investigate the excavation. The study has immense futurepossibilities such that the developed tool can be employed in educating theengineers, and can be integrated with the current software tools to make themmore capable.

 

 

1. 引言

2. 文献回顾

3. 基于无人机的深基坑开挖游戏设计

4. 案例研究

5. 总结、结论与未来工作展望


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