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Proceedings Paper

Can observers exploit enhanced motion parallax to control reaching movements within telepresence environments?
Author(s): Simon J. Watt; Mark F. Bradshaw; Paul B. Hibbard; Ian R. L. Davies; Neil S. Stringer; Andrew R. Willis
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Paper Abstract

The experiments reported here were designed to address two aims. Th first was to determine the sufficiency of head- generated motion parallax, when present in isolation, for the control of natural prehensile movements. The second was to assess the consequences of providing enhanced parallax information for prehension. Enhanced parallax was created by changing the spatial extend of the movement of a camera relative to the extend of the teleoperator's head movements. The gain ranged from 0.5 to 4. The scene was viewed for 2 secs before reaches were made in open-loop conditions. Results showed clearly that information from motion parallax is sufficient to support reliable and accurate motor movements. The enhanced information, led to predictable distortions in perceived size and distance and corresponding alterations in the transport and grip components. The results suggest that the provision of parallax information is beneficial for tasks requiring the recovery of metric depth information. However, if enhanced parallax is used, which facilitates performance in a range of perceptual tasks, re-calibration of the relative motion information is necessary to prevent size/distance distortions.

Paper Details

Date Published: 8 June 2001
PDF: 10 pages
Proc. SPIE 4299, Human Vision and Electronic Imaging VI, (8 June 2001); doi: 10.1117/12.429513
Show Author Affiliations
Simon J. Watt, Univ. of Surrey (United Kingdom)
Mark F. Bradshaw, Univ. of Surrey (United Kingdom)
Paul B. Hibbard, Univ. of Surrey (United Kingdom)
Ian R. L. Davies, Univ. of Surrey (United Kingdom)
Neil S. Stringer, Univ. of Surrey (United Kingdom)
Andrew R. Willis, Defence Evaluation and Research Agency Farnborough (United Kingdom)

Published in SPIE Proceedings Vol. 4299:
Human Vision and Electronic Imaging VI
Bernice E. Rogowitz; Thrasyvoulos N. Pappas, Editor(s)

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