Browsing by Author "Jorge, J."

Now showing 1 - 3 of 3
  • No Thumbnail Available
    ItemMetadata only
    The Continuous Interaction Space: Interaction Techniques Unifying Touch and Gesture On and Above a Digital Surface
    (Springer, 2013) Marquardt, N.; Jota, R.; Greenberg, S.; Jorge, J.
    The rising popularity of digital table surfaces has spawned considerable interest in new interaction techniques. Most interactions fall into one of two modalities: 1) direct touch and multi-touch (by hand and by tangibles) directly on the surface, and 2) hand gestures above the surface. The limitation is that these two modalities ignore the rich interaction space between them. To move beyond this limitation, we first contribute a unification of these discrete interaction modalities called the continuous interaction space. The idea is that many interaction techniques can be developed that go beyond these two modalities, where they can leverage the space between them. That is, we believe that the underlying system should treat the space on and above the surface as a continuum, where a person can use touch, gestures, and tangibles anywhere in the space and naturally move between them. Our second contribution illustrates this, where we introduce a variety of interaction categories that exploit the space between these modalities. For example, with our Extended Continuous Gestures category, a person can start an interaction with a direct touch and drag, then naturally lift off the surface and continue their drag with a hand gesture over the surface. For each interaction category, we implement an example (or use prior work) that illustrates how that technique can be applied. In summary, our primary contribution is to broaden the design space of interaction techniques for digital surfaces, where we populate the continuous interaction space both with concepts and examples that emerge from considering this space as a continuum.
  • No Thumbnail Available
    ItemMetadata only
    Interactive Two-Sided Transparent Displays: Designing for Collaboration
    (ACM, 2014) Li, J.; Greenberg, S.; Sharlin, E.; Jorge, J.
    Transparent displays can serve as an important collaborative medium supporting face-to-face interactions over a shared visual work surface. Such displays enhance workspace awareness: when a person is working on one side of a transparent display, the person on the other side can see the other's body, hand gestures, gaze and what he or she is actually manipulating on the shared screen. Even so, we argue that designing such transparent displays must go beyond current offerings if it is to support collaboration. First, both sides of the display must accept interactive input, preferably by at least touch and / or pen, as that affords the ability for either person to directly interact with the workspace items. Second, and more controversially, both sides of the display must be able to present different content, albeit selectively. Third (and related to the second point), because screen contents and lighting can partially obscure what can be seen through the surface, the display should visually enhance the actions of the person on the other side to better support workspace awareness. We describe our prototype FACINGBOARD-2 system, where we concentrate on how its design supports these three collaborative requirements.
  • No Thumbnail Available
    ItemMetadata only
    Physio@Home: Exploring visual guidance and feedback techniques for physiotherapy patients at home
    (ACM, 2015) Tang, R.; Yang, X.; Tang, A.; Bateman, S.; Jorge, J.
    Physiotherapy patients exercising at home alone are at risk of re-injury since they do not have corrective guidance from a therapist. To explore solutions to this problem, we designed Physio@Home, a prototype that guides people through pre-recorded physiotherapy exercises using real-time visual guides and multi-camera views. Our design addresses several aspects of corrective guidance, including: plane and range of movement, positions and angles of joints to maintain, and extent of movement. We evaluated our design, comparing how closely participants could follow exercise movements in various feedback conditions. Participants were most accurate when using the visual guide and multi-views. Based on our qualitative findings on the visual complexity of the feedback, we conclude with suggestions for exercise guidance systems.