Abstract

Industrial metrology is one of the fastest growing areas in advanced technologies, such as electronics and optics, computation speed, and it has been increased in recent years. There are several tools used in industrial metrology, such as total stations, digital photogrammetry, and laser scanning. Close range digital photogrammetry has been implemented for an industrial piping system in terms of installation, inspection, and replacement. Laser scanning is also used for industrial measurements to generate 3D coordinates points. In order to develop a 3D modelling strategy, this thesis focuses on the development, selection and design of photogrammetric procedures and project specific targets. This thesis also explores image-acquiring sensors such as digital cameras and laser scanners in terms of their capabilities and advantages. Based on experimental setup accuracy, measurements of piping systems are compared for applications of two different sensors. Effects of different surface materials are examined in laser scanning applications and several different types of materials are used for acquiring point clouds data. Measurement of pipes' diameters and residual analyses are conducted with different surface materials, which are used for industrial pipes. Significant improvement in laser scanning data acquisition is examined in terms of data quality both quantitatively and qualitatively during the residual analyses.

Highlights

  • 1.1 Objectives of the StudyThe purpose of this thesis is to study three-dimensional (3D) measurements and modelling procedures for industrial piping systems using digital photogrammetry and laser scanning techniques

  • The application of digital photogrammetry and laser scanning was focused on an industrial piping system there are numerous different applications possible

  • The narrow divergence of the laser beam defines the instantaneous field of view (IFOV), typically ranges from 0.3 mrad to 2 mrad

Read more

Summary

Recommendations

viii Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. ix Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. , I x Reproduced with permission of the copyright owner. Further reproduction prohibited without permission.

Objectives of the Study
Scope of the Study
Thesis Organization
Background
Digital Close-Range Photogrammetry
Automation in Digital Close-Range Photogrammetry
Measurement of Straight Lines in the Image Space
The Reconstruction of Straight Pipes
Light Detection And Ranging (LIDAR) Laser Scanners
Basic Concepts and T~chnologies of Laser Scanners
A Continuous Wave Laser and A Pulsed Laser
A Triangulation Scanner and Ranging Scanner
Observations in the Laser Scanning Process
Target Locating Methods
Formation of 3D CAD Models
Constructive Solid Geometry Model
Edge Model based Fitting Algorithms
Scope of Project and Testfield Setup
Digital Photogrammetry Systems
Laser Scanning System
Experiment Set Up
Surface Roughness in 3D Laser Scanning
Observation of Coverage Angles on different surface materials
Application of Media to Increase Surface Roughness
G Aluminum As Is Sprayed
Residual
SKEWNESS
I Zoom Zoom
A Error 8
Findings
Conclusions
Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.