Verification of micro-scale photogrammetry for smooth three-dimensional object measurement

Sims-Waterhouse, Danny and Piano, Samanta and Leach, Richard K. (2017) Verification of micro-scale photogrammetry for smooth three-dimensional object measurement. Measurement Science and Technology, 28 (5). 055010. ISSN 1361-6501

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Abstract

By using sub-millimetre laser speckle pattern projection we show that photogrammetry systems are able to measure smooth three-dimensional objects with surface height deviations less than 1 μm. The projection of laser speckle patterns allows correspondences on the surface of smooth spheres to be found, and as a result, verification artefacts with low surface height deviations were measured. A combination of VDI/VDE and ISO standards were also utilised to provide a complete verification method, and determine the quality parameters for the system under test. Using the proposed method applied to a photogrammetry system, a 5 mm radius sphere was measured with an expanded uncertainty of 8.5 μm for sizing errors, and 16.6 μm for form errors with a 95 % confidence interval. Sphere spacing lengths between 6 mm and 10 mm were also measured by the photogrammetry system, and were found to have expanded uncertainties of around 20 μm with a 95 % confidence interval.

Item Type: Article
Additional Information: This is an author-created, un-copyedited version of an article accepted for publication in Measurement Science and Technology. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://iopscience.iop.org/article/10.1088/1361-6501/aa6364/meta
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Mechanical, Materials and Manufacturing Engineering
Identification Number: 10.1088/1361-6501/aa6364
Depositing User: Piano, Samanta
Date Deposited: 28 Feb 2017 09:30
Last Modified: 13 Oct 2017 01:39
URI: http://eprints.nottingham.ac.uk/id/eprint/40867

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