ACCURACY EVALUATION OF MEASUREMENT WITH LASER SCANNER EQUIPPED UAV FOR EARTHWORKS CONSTRUCTION MANAGEMENT

2018 ◽  
Vol 74 (2) ◽  
pp. II_125-II_135
Author(s):  
Shigenori TANAKA ◽  
Satoshi KUBOTA ◽  
Ryuichi IMAI ◽  
Kenji NAKAMURA ◽  
Yuhei YAMAMOTO ◽  
...  
Keyword(s):  
Construction Management ◽  
Laser Scanner ◽  
Accuracy Evaluation

scholarly journals Metric Accuracy Evaluation of Dense Matching Algorithms in Archeological Applications

2011 ◽  
Vol 6 ◽  
pp. 275-282 ◽  
Author(s):  
C. Re ◽  
S. Robson ◽  
R. Roncella ◽  
M Hess
Keyword(s):  
Laser Scanner ◽  
Medium Size ◽  
Accuracy Evaluation ◽  
Software Packages ◽  
Dense Matching ◽  
Laser Scanners ◽  
Surface Models ◽  
University College London ◽  
Archaeological Artifacts ◽  
Archaeological Objects

In the cultural heritage field the recording and documentation of small and medium size objects with very detailed Digital Surface Models (DSM) is readily possible by through the use of high resolution and high precision triangulation laser scanners. 3D surface recording of archaeological objects can be easily achieved in museums; however, this type of record can be quite expensive. In many cases photogrammetry can provide a viable alternative for the generation of DSMs. The photogrammetric procedure has some benefits with respect to laser survey. The research described in this paper sets out to verify the reconstruction accuracy of DSMs of some archaeological artifacts obtained by photogrammetric survey. The experimentation has been carried out on some objects preserved in the Petrie Museum of Egyptian Archaeology at University College London (UCL). DSMs produced by two photogrammetric software packages are compared with the digital 3D model obtained by a state of the art triangulation color laser scanner. Intercomparison between the generated DSM has allowed an evaluation of metric accuracy of the photogrammetric approach applied to archaeological documentation and of precision performances of the two software packages.

Development of the Algorithm for Accuracy Evaluation System for Curved Shell Plates by Laser Scanner

2011 ◽  
Author(s):  
N Nakagaki ◽  
◽  
A Sugawara ◽  
K Hiekata ◽  
H Yamato ◽  
...  
Keyword(s):  
Evaluation System ◽  
Laser Scanner ◽  
Accuracy Evaluation

Development of Accuracy Evaluation System for Curved Shell Plate by Laser Scanner

2010 ◽  
pp. 53-62 ◽  
Author(s):  
Kazuo Hiekata ◽  
Hiroyuki Yamato ◽  
Masakazu Enomoto ◽  
Yoshiaki Oida ◽  
Yoshiyuki Furukawa ◽  
...  
Keyword(s):  
Evaluation System ◽  
Laser Scanner ◽  
Accuracy Evaluation ◽  
Shell Plate

Research on Earthwork Calculating Methods Based on 3D Laser Scanning Technology

2012 ◽  
Vol 204-208 ◽  
pp. 618-621
Author(s):  
Bao Xing Zhou ◽  
Jian Ping Yue ◽  
Jin Li
Keyword(s):  
Point Cloud ◽  
Laser Scanning ◽  
Laser Scanner ◽  
Accuracy Evaluation ◽  
Point Cloud Data ◽  
3D Laser Scanning ◽  
Cloud Data ◽  
Calculating Method ◽  
Validation Experiment ◽  
High Resolution Reconstruction

Terrestrial laser scanner (TLS) can provide the measurement of a large number of physical points distributed on the observed surface. A fast earthwork calculating method is proposed based on the redundant number of acquired points, which leads to a very accurate and high resolution reconstruction of the observed surfaces. This paper describes the three main steps of the method, namely the acquisition of the earthwork data based on TLS, the pre-processing of point cloud data, the earthwork calculation and accuracy evaluation based on point cloud data. Furthermore, it illustrates the performance of the proposed method with a validation experiment.

IT Supported Construction Management: A Comprehensive Review and Ongoing Research

2013 ◽  
Vol 671-674 ◽  
pp. 1998-2004 ◽  
Author(s):  
Jun Yang
Keyword(s):  
Construction Management ◽  
State Of The Art ◽  
Laser Scanner ◽  
Video Camera ◽  
Construction Process ◽  
Ongoing Research ◽  
Comprehensive Literature Review ◽  
Multiple Sensor ◽  
Art Research ◽  
Near Future

Information technology has been applied in construction management and is gaining in popularity in recent years. This paper explored the state-of-the-art research and made a comprehensive literature review from two aspects: ‘IT supported construction process surveillance’ and ‘IT supported built infrastructure evaluation’. Multiple sensor technologies (including GPS, RFID, UWB, video camera and laser scanner) and their applications in construction management were introduced separately. Then some of the author’s ongoing research was introduced briefly with two future perspectives envisaged. In the near future IT supported construction management is expected to become a rapidly increasing area and has far-reaching impact in industry.

scholarly journals LiDAR-based Simultaneous Localization and Mapping in an underground mine in Złoty Stok, Poland

2021 ◽  
Vol 942 (1) ◽  
pp. 012035
Author(s):  
P Trybała
Keyword(s):  
Mobile Robot ◽  
Spatial Data ◽  
Laser Scanner ◽  
Simultaneous Localization And Mapping ◽  
Point Clouds ◽  
Working Environment ◽  
Accuracy Evaluation ◽  
Process Data ◽  
3D Point Clouds ◽  
Localization And Mapping

Abstract The mining sector is one of the most promising areas for implementing advanced autonomous robots. The benefits of increased safety, robot actions’ repeatability, and reducing human presence in hazardous locations are especially important in underground mines. One of the core functionalities of such a device is the robot’s ability to localize and navigate itself in the working environment. To achieve this, simultaneous localization and mapping (SLAM) techniques are used. In selected cases, they also allow the acquisition of dense spatial data in the form of 3D point clouds, which can be utilized for various 3D modeling and spatial analysis purposes. In this work, a mobile robot, equipped only with a compact laser scanner, is used to acquire spatial data in the adit of a closed mine in Zloty Stok, Poland. This data is further processed with selected SLAM algorithms to create a homogeneous 3D point cloud. Results are visualized and compared to a model obtained with a survey-grade laser scanner. Accuracy evaluation shows that employing SLAM algorithms to process data collected by a mobile robot can produce a reasonably accurate 3D geometrical model of an underground tunnel, even without incorporating any additional sensors.

scholarly journals Accuracy Evaluation of 3D Geometry from Low-Attitude UAV collections A case at Zijin Mine

2014 ◽  
Vol XL-4 ◽  
pp. 297-300 ◽  
Author(s):  
Q. Wang ◽  
L. Wu ◽  
S. Chen ◽  
D. Shu ◽  
Z. Xu ◽  
...  
Keyword(s):  
Point Cloud ◽  
Laser Scanner ◽  
Experimental Result ◽  
Surface Model ◽  
Accuracy Evaluation ◽  
3D Point Cloud ◽  
Ground Control Points ◽  
Aerial Vehicle ◽  
Modelling Techniques ◽  
Image Modelling

This study investigates the usability of low-attitude unmanned aerial vehicle (UAV) acquiring high resolution images for the geometry reconstruction of opencast mine. Image modelling techniques like Structure from Motion (SfM) and Patch-based Multiview Stereo (PMVS) algorithms are used to generate dense 3D point cloud from UAV collections. Then, precision of 3D point cloud will be first evaluated based on Real-time Kinematic (RTK) ground control points (GCPs) at point level. The experimental result shows that the mean square error of the UAV point cloud is 0.11 m. Digital surface model (DSM) of the study area is generated from UAV point cloud, and compared with that from the Terrestrial Laser Scanner (TLS) data for further comparison at the surface level. Discrepancy map of 3D distances based on DSMs shows that most deviation is less than ±0.4 m and the relative error of the volume is 1.55 %.

scholarly journals BLOCK ADJUSTMENT AND IMAGE MATCHING OF WORLDVIEW-3 STEREO PAIRS AND ACCURACY EVALUATION

2018 ◽  
Vol XLII-3 ◽  
pp. 2473-2477
Author(s):  
C. Zuo ◽  
X. Xiao ◽  
Q. Hou ◽  
B. Li
Keyword(s):  
Image Matching ◽  
Point Cloud ◽  
Large Scale ◽  
Laser Scanner ◽  
Stereo Image ◽  
Topographic Mapping ◽  
Accuracy Evaluation ◽  
Airborne Laser Scanner ◽  
Earth Observation Satellite ◽  
Stereo Image Matching

WorldView-3, as a high-resolution commercial earth observation satellite, which is launched by Digital Global, provides panchromatic imagery of 0.31&amp;thinsp;m resolution. The positioning accuracy is less than 3.5 meter CE90 without ground control, which can use for large scale topographic mapping. This paper presented the block adjustment for WorldView-3 based on RPC model and achieved the accuracy of 1&amp;thinsp;:&amp;thinsp;2000 scale topographic mapping with few control points. On the base of stereo orientation result, this paper applied two kinds of image matching algorithm for DSM extraction: LQM and SGM. Finally, this paper compared the accuracy of the point cloud generated by the two image matching methods with the reference data which was acquired by an airborne laser scanner.<br> The results showed that the RPC adjustment model of WorldView-3 image with small number of GCPs could satisfy the requirement of Chinese Surveying and Mapping regulations for 1&amp;thinsp;:&amp;thinsp;2000 scale topographic maps. And the point cloud result obtained through WorldView-3 stereo image matching had higher elevation accuracy, the RMS error of elevation for bare ground area is 0.45&amp;thinsp;m, while for buildings the accuracy can almost reach 1 meter.

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