Error model of misalignment error in a radial 3D scanner
Mathur, Neha and Summan, Rahul and Dobie, Gordon and West, Graeme and Marshall, Stephen (2017) Error model of misalignment error in a radial 3D scanner. In: IEEE SENSORS 2017, 2017-10-29 - 2017-11-01, Scottish Exhibition and Conference Centre.
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Abstract
A radial 3D, structured light scanner, was developed from a laser projector and a wide field of view machine vision camera to inspect two - four inch diameter pipers, primarily in the nuclear industry. For identifying the nature and the spatial extent of defective regions, the system constructs a surface point cloud. A dominant source of error in the system is caused by manufacturing tolerances which leads to misalignment between the laser projector and the camera. This causes a triangulation error, reducing the accuracy of the result. In this paper, the error model of the misalignment of the laser and image plane. For a given target distance, we derive an almost linear relationship between angular error in degrees and the error in reported radius (distance from the probe to the surface) in mm and found that for the target 0.1 mm accuracy on a 4 inch pipe, the misalignment needs to be controlled to less than 0.05 degrees. Future work will consider a post manufacturing calibration routine to compensate for this misalignment.
ORCID iDs
Mathur, Neha ORCID: https://orcid.org/0000-0002-2918-6908, Summan, Rahul ORCID: https://orcid.org/0000-0002-4090-4528, Dobie, Gordon ORCID: https://orcid.org/0000-0003-3972-5917, West, Graeme ORCID: https://orcid.org/0000-0003-0884-6070 and Marshall, Stephen ORCID: https://orcid.org/0000-0001-7079-5628;-
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Item type: Conference or Workshop Item(Paper) ID code: 62059 Dates: DateEvent29 November 2017Published10 August 2017Accepted18 June 2017SubmittedNotes: (c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. Subjects: Technology > Electrical engineering. Electronics Nuclear engineering Department: Faculty of Engineering > Electronic and Electrical Engineering
Technology and Innovation Centre > Sensors and Asset Management
Strategic Research Themes > Energy
Strategic Research Themes > Measurement Science and Enabling TechnologiesDepositing user: Pure Administrator Date deposited: 16 Oct 2017 15:00 Last modified: 13 Oct 2024 00:57 URI: https://strathprints.strath.ac.uk/id/eprint/62059