Proceedings: GI 2011

Ubiquitous cursor: a comparison of direct and indirect pointing feedback in multi-display environments

Robert Xiao , Miguel Nacenta , Regan Mandryk , Andy Cockburn , Carl Gutwin

Proceedings of Graphics Interface 2011: St. John’s, Newfoundland, Canada, 25 - 27 May 2011, 135-142

DOI 10.20380/GI2011.18

  • Bibtex

    @inproceedings{Xiao:2011:10.20380/GI2011.18,
    author = {Xiao, Robert and Nacenta, Miguel and Mandryk, Regan and Cockburn, Andy and Gutwin, Carl},
    title = {Ubiquitous cursor: a comparison of direct and indirect pointing feedback in multi-display environments},
    booktitle = {Proceedings of Graphics Interface 2011},
    series = {GI 2011},
    year = {2011},
    issn = {0713-5424},
    isbn = {978-1-4503-0693-5},
    location = {St. John{\textquoteright}s, Newfoundland, Canada},
    pages = {135--142},
    numpages = {8},
    doi = {10.20380/GI2011.18},
    publisher = {Canadian Human-Computer Communications Society},
    address = {Toronto, Ontario, Canada},
    }

Abstract

Multi-display environments (MDEs) connect several displays into a single digital workspace. One of the main problems to be solved in an MDE's design is how to enable movement of objects from one display to another. When the real-world space between displays is modeled as part of the workspace (i.e., Mouse Ether), it becomes difficult for users to keep track of their cursors during a transition between displays. To address this problem, we developed the Ubiquitous Cursor system, which uses a projector and a hemispherical mirror to completely cover the interior of a room with usable low-resolution pixels. Ubiquitous Cursor allows us to provide direct feedback about the location of the cursor between displays. To assess the effectiveness of this direct-feedback approach, we carried out a study that compared Ubiquitous Cursor with two other standard approaches: Halos, which provide indirect feedback about the cursor's location; and Stitching, which warps the cursor between displays, similar to the way that current operating systems address multiple monitors. Our study tested simple cross-display pointing tasks in an MDE; the results showed that Ubiquitous Cursor was significantly faster than both other approaches. Our work shows the feasibility and the value of providing direct feedback for cross-display movement, and adds to our understanding of the principles underlying targeting performance in MDEs.