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Journal of Sensors
Volume 2017, Article ID 1605943, 10 pages
https://doi.org/10.1155/2017/1605943
Research Article

Close Range Photogrammetry for Direct Multiple Feature Positioning Measurement without Targets

1Mechanical Engineering Unit, IK4-Tekniker, Eibar, Spain
2Smart and Autonomous Systems Unit, IK4-Tekniker, Eibar, Spain
3Department of Graphic Design and Engineering Projects, UPV/EHU, Bilbao, Spain

Correspondence should be addressed to Gorka Kortaberria; se.rekinket@airrebatrokg

Received 9 March 2017; Accepted 24 April 2017; Published 29 May 2017

Academic Editor: Carlos Ruiz

Copyright © 2017 Gorka Kortaberria et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The main objective of this study is to present a new method to carry out measurements so as to improve the positioning verification step in the wind hub part dimensional validation process. This enhancement will speed up the measuring procedures for these types of parts. An industrial photogrammetry based system was applied to take advantage of its results, and new functions were added to existing capabilities. In addition to a new development based on photogrammetry modelling and image processing, a measuring procedure was defined based on optical and vision system considerations. A validation against a certified procedure by means of a laser-tracker has also been established obtaining deviations of ±0.125 μm/m.