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Eye gaze in virtual environments: evaluating the need and initial work on implementation

Murray, N, Roberts, D, Steed, AP, Sharkey, P, Dickerson, P, Rae, J and Wolff, R 2009, 'Eye gaze in virtual environments: evaluating the need and initial work on implementation' , Concurrency and Computation: Practice and Experience, 21 (11) , pp. 1437-1449.

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    Abstract

    For efficient collaboration between participants, eye gaze is seen as being critical for interaction. Video conferencing either does not attempt to support eye gaze (e.g. AcessGrid) or only approximates it in round table conditions (e.g. life size telepresence). Immersive collaborative virtual environments represent remote participants through avatars that follow their tracked movements. By additionally tracking people’s eyes and representing their movement on their avatars, the line of gaze can be faithfully reproduced, as opposed to approximated. This paper presents the results of initial work that tested if the focus of gaze could be more accurately gauged if tracked eye movement was added to that of the head of an avatar observed in an immersive VE. An experiment was conducted to assess the difference between user’s abilities to judge what objects an avatar is looking at with only head movements being displayed, while the eyes remained static, and with eye gaze and head movement information being displayed. The results from the experiment show that eye gaze is of vital importance to the subjects correctly identifying what a person is looking at in an immersive virtual environment. This is followed by a description of the work that is now being undertaken following the positive results from the experiment.We discuss the integration of an eye tracker more suitable for immersive mobile use and the software and techniques that were developed to integrate the user’s real-world eye movements into calibrated eye gaze in an immersive virtual world. This is to be used in the creation of an immersive collaborative virtual environment supporting eye gaze and its ongoing experiments.

    Item Type: Article
    Themes: Media, Digital Technology and the Creative Economy
    Schools: Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Virtual Environments & Future Media Research Centre
    Journal or Publication Title: Concurrency and Computation: Practice and Experience
    Publisher: John Wiley & Sons
    Refereed: Yes
    ISSN: 1532-0626
    Depositing User: NS Murray
    Date Deposited: 24 Oct 2011 15:51
    Last Modified: 20 Aug 2013 18:15
    URI: http://usir.salford.ac.uk/id/eprint/18612

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