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Usability of Multiviewpoint Images for Spatial Interaction in Projection-Based Display Systems
January/February 2007 (vol. 13 no. 1)
pp. 26-33
Abstract—In a common application scenario, large screen projection-based stereoscopic display systems are not used by a single user alone, but are shared by a small group of people. Using multiviewpoint images for multiuser interaction does not require special hardware and scales transparently with the number of colocated users in a system. We present a qualitative and quantitative study comparing usability and interaction performance for multiviewpoint images to non-head-tracked and head-tracked interaction for ray-casting selection and in-hand object manipulation. Results show that while direct first-person interaction in projection-based displays without head-tracking is difficult or even completely impractical, interaction with multiviewpoint images can produce similar or even better performance than fully head-tracked interaction. For ray-casting selection, interaction with multiviewpoint images is actually up to 10 percent faster than head-tracked interaction. For in-hand object manipulation in a simple docking task, multiviewpoint interaction performs only about 6 percent slower than fully head-tracked interaction.
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Index Terms:
Collaborative computing, usability testing, virtual reality.
Citation:
Andreas Simon, "Usability of Multiviewpoint Images for Spatial Interaction in Projection-Based Display Systems," IEEE Transactions on Visualization and Computer Graphics, vol. 13, no. 1, pp. 26-33, Jan./Feb. 2007, doi:10.1109/TVCG.2007.23
