Construction Site Evaluation Employing 3D Models from UAV Imagery

2018 ◽  
Author(s):  
Chandrasekar Venkatesh ◽  
◽  
Aswin Balasubramaniam ◽  
Rumit Kumar ◽  
Bryan Brown ◽  
...  
Keyword(s):  
3D Models ◽  
Construction Site ◽  
Site Evaluation

Exploratory study of using unmanned aerial system imagery for construction site 3D mapping

2018 ◽  
Vol 18 (3) ◽  
pp. 301-320 ◽  
Author(s):  
Juliana Sampaio Álvares ◽  
Dayana Bastos Costa ◽  
Roseneia Rodrigues Santos de Melo
Keyword(s):  
Construction Management ◽  
Exploratory Study ◽  
Construction Projects ◽  
Digital Camera ◽  
3D Models ◽  
Unmanned Aerial System ◽  
3D Mapping ◽  
Construction Site ◽  
Content Type ◽  
Potential Use

Purpose The purpose of this paper is to present an exploratory study which aims to assess the potential use of 3D mapping of buildings and construction sites using unmanned aerial system (UAS) imagery for supporting the construction management tasks. Design/methodology/approach The case studies were performed in two different residential construction projects. The equipment used was a quadcopter equipped with digital camera and GPS that allow for the registry of geo-referenced images. The Pix4D Mapper and PhotoScan software were used to generate the 3D models. The study sought to examine three main constructs related to the 3D mapping developed: the easiness of development, the quality of the models in accordance with the proposed use and the usefulness and limitations of the mapping for construction management purposes. Findings The main contributions of this study include a better understanding of the development process of 3D mapping from UAS imagery, the potential uses of this mapping for construction management and the identification of barriers and benefits related to the application of these emerging technologies for the construction industry. Originality/value The importance of the study is related to the initiative to identify and evaluate the potential use of 3D mapping from UAS imagery, which can provide a 3D view of the construction site from different perspectives, for construction management tasks applications, trying to bring positive contributions to this knowledge area.

scholarly journals Autonomous Environment Generator for UAV-Based Simulation

2021 ◽  
Vol 11 (5) ◽  
pp. 2185
Author(s):  
Justin Nakama ◽  
Ricky Parada ◽  
João P. Matos-Carvalho ◽  
Fábio Azevedo ◽  
Dário Pedro ◽  
...  
Keyword(s):  
Real World ◽  
Large Scale ◽  
Satellite Images ◽  
3D Models ◽  
Machine Learning Algorithms ◽  
Operational Planning ◽  
Proof Of Concept ◽  
Simulated Environments ◽  
Site Evaluation ◽  
Testing Environments

The increased demand for Unmanned Aerial Vehicles (UAV) has also led to higher demand for realistic and efficient UAV testing environments. The current use of simulated environments has been shown to be a relatively inexpensive, safe, and repeatable way to evaluate UAVs before real-world use. However, the use of generic environments and manually-created custom scenarios leaves more to be desired. In this paper, we propose a new testbed that utilizes machine learning algorithms to procedurally generate, scale, and place 3D models to create a realistic environment. These environments are additionally based on satellite images, thus providing users with a more robust example of real-world UAV deployment. Although certain graphical improvements could be made, this paper serves as a proof of concept for an novel autonomous and relatively-large scale environment generator. Such a testbed could allow for preliminary operational planning and testing worldwide, without the need for on-site evaluation or data collection in the future.

scholarly journals The device for center adjustment of pipe joints to carry out welding works when building and major repairing main pipelines

2018 ◽  
Vol 224 ◽  
pp. 01053
Author(s):  
Asvar Akhmedov
Keyword(s):  
Process Simulation ◽  
3D Models ◽  
Partial Replacement ◽  
Construction Site ◽  
Working Process ◽  
High Quality ◽  
Climatic Zones ◽  
Control Console ◽  
Main Pipelines ◽  
Pipe Joints

The device is created to carry out high-quality center adjustment of pipe joints setting a required opening between the joints’ edges. The proposed device is totally autonomous and can be applied in all the climatic zones of Russia. The proposed device in the paper is adapted to the conventional method of major repairs with a partial replacement of pipes. The device excludes the use of internal clamps. To visualize the process, simulation 3D models have been developed. The use of the device will enable to improve the equipment for the repair and construction site. The device can be used both in the site and the field conditions. Applying the proposed device enables to weld pipe joints not only in the length but also in the strings. The outriggers are applied to spatially stabilize the device in the working process. The management of the device is done with a remote control console which enables to quickly prepare it for service.

scholarly journals ON A FUNDAMENTAL EVALUATION OF A UAV EQUIPPED WITH A MULTICHANNEL LASER SCANNER

2018 ◽  
Vol XLII-2 ◽  
pp. 753-758 ◽  
Author(s):  
K. Nakano ◽  
H. Suzuki ◽  
K. Omori ◽  
K. Hayakawa ◽  
M. Kurodai
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Structure From Motion ◽  
Laser Scanner ◽  
3D Models ◽  
Construction Site ◽  
Key Points ◽  
Laser Scanners ◽  
Multichannel Laser ◽  
Reconstruction Software ◽  
High Resolution Images

Unmanned aerial vehicles (UAVs), which have been widely used in various fields such as archaeology, agriculture, mining, and construction, can acquire high-resolution images at the millimetre scale. It is possible to obtain realistic 3D models using high-overlap images and 3D reconstruction software based on computer vision technologies such as Structure from Motion and Multi-view Stereo. However, it remains difficult to obtain key points from surfaces with limited texture such as new asphalt or concrete, or from areas like forests that may be concealed by vegetation. A promising method for conducting aerial surveys is through the use of UAVs equipped with laser scanners. We conducted a fundamental performance evaluation of the Velodyne VLP-16 multi-channel laser scanner equipped to a DJI Matrice 600 Pro UAV at a construction site. Here, we present our findings with respect to both the geometric and radiometric aspects of the acquired data.

THE GENESIS OF TOOLS FOR TEACHING PUPILS TO DEVELOP FLOWCHARTS

2020 ◽  
pp. 11-15
Author(s):  
A. A. Zubrilin ◽  
M. N. Makarov
Keyword(s):  
Historical Perspective ◽  
3D Models ◽  
Computer Applications ◽  
Internet Services

The historical perspective provides an overview of how to study flowcharts in a school informatics course. Computer applications and Internet services are considered that automate the development of flowcharts. It is shown how 3D technologies can help an informatics teacher in preparing 3D models for the study of flowcharts.

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