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Recalibration of a Stereoscopic Camera System for In-Flight Wing Deformation Measurements

Kirmse, Tania (2015) Recalibration of a Stereoscopic Camera System for In-Flight Wing Deformation Measurements. European Test and Telemetry Conference- ETTC 2015, 09. - 11. Juni 2015, Toulouse, France.

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Official URL: http://www.ettc2015.org

Abstract

The applicability of wing deformation measurements techniques based on stereoscopic photogrammetry has already been demonstrated for in-flight applications. The position and alignment of a stereoscopic camera setup is described in the external parameters of the camera calibration by a rotation matrix and a translation vector. Especially at dynamic flight manoeuvres varying multidirectional loads and the vibration level can affect the camera installation and induce slight changes in the camera position and alignment. Those camera movements induce a decalibration of the measurement system and affect the accuracy of the results directly. The paper describes criteria to assess the decalibration level of a stereo camera system. An approach for a recalibration and its limits are demonstrated for a dynamic wing deformation measurement performed on an Evektor Cobra VUT100 airplane by means of the Image Pattern Correlation Technique (IPCT). IPCT combines the principles of stereoscopic photogrammetry with image correlation methods to determine corresponding areas in a stereo image pair and delivers the 3D wing shape as result. The measurement was part of the project ‘Advanced In-Flight Measurement Techniques 2’ (AIM²) funded by the 7th Framework Programme for Research of the EU.

Item URL in elib:https://elib.dlr.de/95275/
Document Type:Conference or Workshop Item (Speech)
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:2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-6
Series Name:Conference Proceedings online
Status:Published
Keywords:stereo photogrammetry, wing deformation measurement, flight testing
Event Title:European Test and Telemetry Conference- ETTC 2015
Event Location:Toulouse, France
Event Type:international Conference
Event Dates:09. - 11. Juni 2015
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:20 Aug 2015 11:54
Last Modified:20 Aug 2015 11:54

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