A rail wear measurement method based on structured light scanning

2017 ◽  
Author(s):  
Peng Chen ◽  
Peijun Wang ◽  
Martin Lauer ◽  
Xiaomin Tang ◽  
Jindong Wang
Keyword(s):  
Measurement Method ◽  
Structured Light ◽  
Rail Wear ◽  
Wear Measurement ◽  
Structured Light Scanning

Simple and fast rail wear measurement method based on structured light

2011 ◽  
Vol 49 (11) ◽  
pp. 1343-1351 ◽  
Author(s):  
Zhen Liu ◽  
Junhua Sun ◽  
Heng Wang ◽  
Guangjun Zhang
Keyword(s):  
Measurement Method ◽  
Structured Light ◽  
Rail Wear ◽  
Wear Measurement

Real-time and accurate rail wear measurement method and experimental analysis

2014 ◽  
Vol 31 (8) ◽  
pp. 1721 ◽  
Author(s):  
Zhen Liu ◽  
Fengjiao Li ◽  
Bangkui Huang ◽  
Guangjun Zhang
Keyword(s):  
Real Time ◽  
Experimental Analysis ◽  
Measurement Method ◽  
Rail Wear ◽  
Wear Measurement

scholarly journals Structured light scanning measurement method based on mechanical splicing

2021 ◽  
Vol 42 (5) ◽  
pp. 884-890
Author(s):  
WU Qiong ◽  
◽  
◽  
LIU Wei ◽  
ZHOU Zhilong ◽  
...  
Keyword(s):  
Measurement Method ◽  
Structured Light ◽  
Structured Light Scanning

scholarly journals A High-Precision Registration Technology Based on Bundle Adjustment in Structured Light Scanning System

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Jianying Yuan ◽  
Qiong Wang ◽  
Xiaoliang Jiang ◽  
Bailin Li
Keyword(s):  
High Precision ◽  
Large Scale ◽  
Structured Light ◽  
Bundle Adjustment ◽  
Scanning System ◽  
Control Points ◽  
Registration Method ◽  
Global Control ◽  
3D Data ◽  
Structured Light Scanning

The multiview 3D data registration precision will decrease with the increasing number of registrations when measuring a large scale object using structured light scanning. In this paper, we propose a high-precision registration method based on multiple view geometry theory in order to solve this problem. First, a multiview network is constructed during the scanning process. The bundle adjustment method from digital close range photogrammetry is used to optimize the multiview network to obtain high-precision global control points. After that, the 3D data under each local coordinate of each scan are registered with the global control points. The method overcomes the error accumulation in the traditional registration process and reduces the time consumption of the following 3D data global optimization. The multiview 3D scan registration precision and efficiency are increased. Experiments verify the effectiveness of the proposed algorithm.

scholarly journals Melite Civitas Romana in 3D: Virtualization Project of the Archaeological Park and Museum of the Domus Romana of Rabat, Malta

2021 ◽  
Vol 7 (1) ◽  
pp. 51-83
Author(s):  
Davide Tanasi ◽  
Stephan Hassam ◽  
Kaitlyn Kingsland ◽  
Paolo Trapani ◽  
Matthew King ◽  
...  
Keyword(s):  
Laser Scanning ◽  
Structured Light ◽  
Terrestrial Laser Scanning ◽  
Archaeological Site ◽  
South Florida ◽  
Virtual Museum ◽  
Current State ◽  
Structured Light Scanning ◽  
The University ◽  
Archaeological Excavations

Abstract The archaeological site of the Domus Romana in Rabat, Malta was excavated almost 100 years ago yielding artefacts from the various phases of the site. The Melite Civitas Romana project was designed to investigate the domus, which may have been the home of a Roman Senator, and its many phases of use. Pending planned archaeological excavations designed to investigate the various phases of the site, a team from the Institute for Digital Exploration from the University of South Florida carried out a digitization campaign in the summer of 2019 using terrestrial laser scanning and aerial digital photogrammetry to document the current state of the site to provide a baseline of documentation and plan the coming excavations. In parallel, structured light scanning and photogrammetry were used to digitize 128 artefacts in the museum of the Domus Romana to aid in off-site research and create a virtual museum platform for global dissemination.

scholarly journals A COMPARISON OF STRUCTURED LIGHT SCANNING AND PHOTOGRAMMETRY FOR THE DIGITISATION OF PHYSICAL PROTOTYPES

2021 ◽  
Vol 1 ◽  
pp. 11-20
Author(s):  
Owen Freeman Gebler ◽  
Mark Goudswaard ◽  
Ben Hicks ◽  
David Jones ◽  
Aydin Nassehi ◽  
...  
Keyword(s):  
Early Stage ◽  
Structured Light ◽  
Superior Performance ◽  
Specific Design ◽  
Model Quality ◽  
Stage Design ◽  
Design Changes ◽  
Structured Light Scanning ◽  
Early Stage Design

AbstractPhysical prototyping during early stage design typically represents an iterative process. Commonly, a single prototype will be used throughout the process, with its form being modified as the design evolves. If the form of the prototype is not captured as each iteration occurs understanding how specific design changes impact upon the satisfaction of requirements is challenging, particularly retrospectively.In this paper two different systems for digitising physical artefacts, structured light scanning (SLS) and photogrammetry (PG), are investigated as means for capturing iterations of physical prototypes. First, a series of test artefacts are presented and procedures for operating each system are developed. Next, artefacts are digitised using both SLS and PG and resulting models are compared against a master model of each artefact. Results indicate that both systems are able to reconstruct the majority of each artefact's geometry within 0.1mm of the master, however, overall SLS demonstrated superior performance, both in terms of completion time and model quality. Additionally, the quality of PG models was far more influenced by the effort and expertise of the user compared to SLS.

Simultaneous reconstruction and calibration for multi-view structured light scanning

2016 ◽  
Vol 39 ◽  
pp. 120-131 ◽  
Author(s):  
S. Garrido-Jurado ◽  
R. Muñoz-Salinas ◽  
F.J. Madrid-Cuevas ◽  
M.J. Marín-Jiménez
Keyword(s):  
Structured Light ◽  
Simultaneous Reconstruction ◽  
Structured Light Scanning
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