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Recalibration of a stereoscopic camera system for in-flight wing Deformation measurements

Kirmse, Tania (2016) Recalibration of a stereoscopic camera system for in-flight wing Deformation measurements. Measurement Science & Technology, 27 (5), pp. 1-11. Institute of Physics (IOP) Publishing. DOI: 10.1088/0957-0233/27/5/054001 ISSN 0957-0233

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Official URL: http://iopscience.iop.org/article/10.1088/0957-0233/27/5/054001/meta

Abstract

A decalibration of a stereoscopic camera system caused by slight movements of the cameras can influence the accuracy of the measured 3D positions significantly. Especially for large scale in-flight applications this is difficult to avoid, e.g. due to the high loads and the vibration level occurring during dynamic flight manoeuvres. Thus a practicable approach for a correction of the results by a recalibration of the camera system is necessary. The Image pattern correlation technique (IPCT) delivers large area surface results which enables the assessment of its triangulation error in detail as a measure for the quality of the results. The objective of the presented recalibration is a minimisation of the overall triangulation error by a correction of the external camera parameters. The criteria to assess the reliability of the 3D-surface results and the deformation results derived from are described as well as the limitations of the method. A wing deformation measurement on a VUT100 Cobra Aeroplane by means of stereoscopic IPCT was used as a test case to demonstrate the applicability of the recalibration method on real flight test data.

Item URL in elib:https://elib.dlr.de/96421/
Document Type:Article
Additional Information:Paper: 054001
Title:Recalibration of a stereoscopic camera system for in-flight wing Deformation measurements
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kirmse, Taniatania.kirmse (at) dlr.deUNSPECIFIED
Date:2016
Journal or Publication Title:Measurement Science & Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:27
DOI :10.1088/0957-0233/27/5/054001
Page Range:pp. 1-11
Publisher:Institute of Physics (IOP) Publishing
ISSN:0957-0233
Status:Published
Keywords:camera calibration, stereo photogrammetry, deformation measurement
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Micknaus, Ilka
Deposited On:19 Apr 2016 14:26
Last Modified:06 Sep 2019 15:21

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