A framework for the study of vision in active observers

Carlo Nicolini, Carlo Fantoni, Giovanni Mancuso, Robert Volcic, Fulvio Domini

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    We present a framework for the study of active vision, i.e., the functioning of the visual system during actively self-generated body movements. In laboratory settings, human vision is usually studied with a static observer looking at static or, at best, dynamic stimuli. In the real world, however, humans constantly move within dynamic environments. The resulting visual inputs are thus an intertwined mixture of self- and externally-generated movements. To fill this gap, we developed a virtual environment integrated with a head-tracking system in which the influence of self- and externally-generated movements can be manipulated independently. As a proof of principle, we studied perceptual stationarity of the visual world during lateral translation or rotation of the head. The movement of the visual stimulus was thus parametrically tethered to self-generated movements. We found that estimates of object stationarity were less biased and more precise during head rotation than translation. In both cases the visual stimulus had to partially follow the head movement to be perceived as immobile. We discuss a range of possibilities for our setup among which the study of shape perception in active and passive conditions, where the same optic flow is replayed to stationary observers.

    Original languageEnglish (US)
    Title of host publicationProceedings of SPIE-IS and T Electronic Imaging - Human Vision and Electronic Imaging XIX
    PublisherSPIE
    Volume9014
    ISBN (Print)9780819499318
    DOIs
    StatePublished - Jan 1 2014
    EventHuman Vision and Electronic Imaging XIX - San Francisco, CA, United States
    Duration: Feb 3 2014Feb 6 2014

    Other

    OtherHuman Vision and Electronic Imaging XIX
    CountryUnited States
    CitySan Francisco, CA
    Period2/3/142/6/14

    Fingerprint

    Observer
    visual stimuli
    Virtual reality
    Optics
    Stationarity
    head movement
    Active Vision
    Human Vision
    Visual System
    stimuli
    Tracking System
    Dynamic Environment
    Virtual Environments
    Biased
    Vision
    Movement
    Framework
    optics
    Lateral
    estimates

    Keywords

    • 3D
    • Active vision
    • head tracking
    • optic flow
    • perception and action
    • shape/depth/motion perception
    • structure from motion
    • virtual reality

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering

    Cite this

    Nicolini, C., Fantoni, C., Mancuso, G., Volcic, R., & Domini, F. (2014). A framework for the study of vision in active observers. In Proceedings of SPIE-IS and T Electronic Imaging - Human Vision and Electronic Imaging XIX (Vol. 9014). [901414] SPIE. https://doi.org/10.1117/12.2045459

    A framework for the study of vision in active observers. / Nicolini, Carlo; Fantoni, Carlo; Mancuso, Giovanni; Volcic, Robert; Domini, Fulvio.

    Proceedings of SPIE-IS and T Electronic Imaging - Human Vision and Electronic Imaging XIX. Vol. 9014 SPIE, 2014. 901414.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Nicolini, C, Fantoni, C, Mancuso, G, Volcic, R & Domini, F 2014, A framework for the study of vision in active observers. in Proceedings of SPIE-IS and T Electronic Imaging - Human Vision and Electronic Imaging XIX. vol. 9014, 901414, SPIE, Human Vision and Electronic Imaging XIX, San Francisco, CA, United States, 2/3/14. https://doi.org/10.1117/12.2045459
    Nicolini C, Fantoni C, Mancuso G, Volcic R, Domini F. A framework for the study of vision in active observers. In Proceedings of SPIE-IS and T Electronic Imaging - Human Vision and Electronic Imaging XIX. Vol. 9014. SPIE. 2014. 901414 https://doi.org/10.1117/12.2045459
    Nicolini, Carlo ; Fantoni, Carlo ; Mancuso, Giovanni ; Volcic, Robert ; Domini, Fulvio. / A framework for the study of vision in active observers. Proceedings of SPIE-IS and T Electronic Imaging - Human Vision and Electronic Imaging XIX. Vol. 9014 SPIE, 2014.
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