Browsing by Author "Tournet, Julie"

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    Comparing visual feedback techniques for object transfer between private and shared surfaces
    (ACM, 2013) Tournet, Julie; Besacier, Guillaume; Goyal, Nippun; McClelland, Phillip J.; Scott, Stacey D.
    The increasing trend toward multi-device ecologies that provide private and shared digital surfaces introduces a need for effective cross-device object transfer interaction mechanisms. This work-in-progress paper investigates visual feedback techniques for enhancing the usability of the Pick-and-Drop cross-device object transfer technique when used between a shared digital table and private tablets. We propose two visual feedback designs aimed to improve awareness of virtual objects during a Pick-and-Drop transfer. Initial results from a comparative user study are presented and discussed, along with directions for future work.
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    Surface Ghosts: Promoting Awareness of Transferred Objects during Pick-and-Drop Transfer in Multi-Surface Environments
    (ACM, 2014) Scott, Stacey D.; Besacier, Guillaume; Tournet, Julie; Goyal, Nippun; Haller, Michael
    Rekimoto's Pick-and-Drop (P&D) transfer technique is commonly used to support multi-surface object transfer (e.g., between a shared tabletop and tablet) due to its easily understood metaphor of emulating object movement in the physical world. Current multi-surface implementations of P&D provide little to no feedback during transfer, causing confusion for the person performing the action as well as others in the environment. To address this issue, we investigated the use of virtual embodiments to improve awareness of transferred objects, in the context of a real-world group task that relied heavily on cross-device transfer. An iterative design process led to the design of Surface Ghosts virtual embodiments, which take the form of semi-transparent 'ghosts' of the transferred objects displayed under the "owner's" hand on the tabletop during transfer. A user study that compared two Surface Ghosts designs-varied by how explicitly the "owner" was indicated-showed that both designs improved awareness of transferred objects when compared to a no-feedback control condition, especially for tabletop-to-tablet transfers.