“Ubiquitous Graphics” by Sanneblad and Holmquist

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Description:


    Ubiquitous Graphics addresses the problem of interacting with very large computer graphics images. It uses a combination of mobile and stationary displays to show both overview and detail. The main image is displayed using a projector or other large traditional display. To access details, the user holds a mobile device in front of the stationary display (c.f. Figure 1). Using ultrasonic tracking the smaller display is aligned with the overview, giving access to a corresponding portion of the image in higher resolution. Alternatively the system provides “magic lens” functionality that can show additional information.

    Users can interact directly with the image, by adding free-form annotations and pre-defined graphical objects. Several devices can be connected to the system at the same time, allowing for collaborative applications. Changes are propagated across all devices connected to the system, so that when one user makes an annotation it immediately become visible on all other displays, including the overview. Users can either add annotations in-place by holding up their device to a desired portion of the overview image and scribbling on the surface of their own device, or they can “tear off” an area by holding up the display to the required portion, then remove it and work away from the large display. As an additional form of navigation, standard panning and zooming is provided through a GUI on the mobile device.

    Ubiquitous Graphics offers new functionality compared to related systems (such as the Focus Plus Context Screen [1] and Peephole Displays [3]), in that it combines a peephole display to access a shared workspace, a focus plus context display and a wireless 2D tracking system (based on our Total Recall prototype [2]), all in one system.

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    References

    1. Baudisch, P., Good, N. and Stewart, P. Focus Plus Context Screens: Combining Display Technology with Visualization Techniques. In Proceedings of UIST 2001, Orlando, USA, pp. 31-40.

    2. Holmquist, L.E., Sanneblad, J. and Gaye, L. Total Recall: Inplace Viewing of Captured Whiteboard Annotations. In Extended Abstracts of CHI 2003, Ft Lauderdale, USA.

    3. Yee, K.-P. Peephole Displays: Pen Interaction on Spatially Aware Handheld Computers. In Proceedings of CHI 2003, Ft. Lauderdale, USA.

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