A Comparison of Ray Pointing Techniques for Very Large Displays

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dc.contributor.authorJota, Riccardoeng
dc.contributor.authorNacenta, Migueleng
dc.contributor.authorJorge, Joaquimeng
dc.contributor.authorCarpendale, Sheelagheng
dc.contributor.authorGreenberg, Sauleng
dc.date.accessioned2009-09-25T17:30:29Z
dc.date.available2009-09-25T17:30:29Z
dc.date.issued2009-09-25T17:30:29Z
dc.description.abstractRay pointing techniques such as laser pointing have long been proposed as a natural way to interact with large and distant displays. However we still do not understand the differences between ray pointing alternatives and how they are affected by the large size of modern displays. We present a study where four different variants of ray pointing are tested for horizontal targeting, vertical targeting and tracing tasks in a room-sized display that covers a large part of the user‟s field of view. Our goal was to better under-stand two factors: control type and parallax under this sce-nario. The results show that techniques based on rotational control perform better for targeting tasks and techniques with low parallax are best for tracing tasks. This implies that ray pointing techniques must be carefully selected de-pending on the kind of tasks supported by the system. We also present evidence on how a Fitts‟s law analysis based on angles can explain the differences in completion time of tasks better than the standard analysis based on linear width and distance.eng
dc.description.refereedNoeng
dc.identifier.department2009-942-21eng
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/30630
dc.identifier.urihttp://hdl.handle.net/1880/47433
dc.language.isoengeng
dc.publisher.corporateUniversity of Calgaryeng
dc.publisher.facultyScienceeng
dc.subjectInformation interfaces and presentation (e.g.eng
dc.subjectHCI)eng
dc.subject.otherLarge displays, ray pointing, distant pointing, image-plane, targeting, tracing, index of difficulty, ISO 9241, parallaxeng
dc.titleA Comparison of Ray Pointing Techniques for Very Large Displayseng
dc.typetechnical reporteng
thesis.degree.disciplineComputer Scienceeng
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