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Authors: Daniela Markov-Vetter 1 ; Vanja Zander 2 ; Joachim Latsch 2 and Oliver Staadt 3

Affiliations: 1 German Aerospace Center and University of Rostock, Germany ; 2 German Sport University Cologne, Germany ; 3 University of Rostock, Germany

ISBN: 978-989-758-087-1

Keyword(s): Augmented Reality, Interaction, Direct Pointing, Usability.

Related Ontology Subjects/Areas/Topics: Augmented, Mixed and Virtual Environments ; Computer Vision, Visualization and Computer Graphics ; Evaluation of Human Performance and Usability in Virtual Environments ; Interactive Environments

Abstract: The performance of Augmented Reality direct object selection coded outside of the human egocentric body frame of reference decreases under short-term altered gravity. Therefore adequate countermeasures are required. This paper presents the results of a proof-of-concept (POC) study to investigate the impact of simulated hypergravity on the size and distance of a given target. The POC study is divided in a case study and a user study, whereby hypergravity was induced by a long-arm human centrifuge and additional arm weighting. For gravity-dependent resizing and –positioning we used the Hooke’s law that resulted in two techniques of target deformation (compression, elongation) and compared both methods with normal sized targets. Besides common metrics to measure the performance, we additionally evaluated the physiological strain by the heart rate variability and the speed-accuracy tradeoff of the resizing techniques according to Fitts’ law. The study showed that the online adaption of th e present gravity load to targets' size and distance influences the performance of direct AR direct pointing. The results revealed that the pointing performance benefits from elongation target deformation by increased target sizes and distances. (More)

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Paper citation in several formats:
Markov-Vetter D., Zander V., Latsch J. and Staadt O. (2015). The Influence of Gravity-adapted Target Resizing on Direct Augmented Reality Pointing under Simulated Hypergravity.In Proceedings of the 10th International Conference on Computer Graphics Theory and Applications (VISIGRAPP 2015)ISBN 978-989-758-087-1, pages 401-411. DOI: 10.5220/0005316604010411

@conference{grapp15,
author={Daniela Markov-Vetter and Vanja Zander and Joachim Latsch and Oliver Staadt},
title={The Influence of Gravity-adapted Target Resizing on Direct Augmented Reality Pointing under Simulated Hypergravity},
booktitle={Proceedings of the 10th International Conference on Computer Graphics Theory and Applications (VISIGRAPP 2015)},
year={2015},
pages={401-411},
doi={10.5220/0005316604010411},
isbn={978-989-758-087-1},
}

TY - CONF

JO - Proceedings of the 10th International Conference on Computer Graphics Theory and Applications (VISIGRAPP 2015)
TI - The Influence of Gravity-adapted Target Resizing on Direct Augmented Reality Pointing under Simulated Hypergravity
SN - 978-989-758-087-1
AU - Markov-Vetter D.
AU - Zander V.
AU - Latsch J.
AU - Staadt O.
PY - 2015
SP - 401
EP - 411
DO - 10.5220/0005316604010411

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