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dc.contributor.authorDarrell, Trevoren_US
dc.contributor.authorChecka, Nealen_US
dc.contributor.authorOh, Aliceen_US
dc.contributor.authorMorency, Louis-Philippeen_US
dc.date.accessioned2004-10-08T20:37:23Z
dc.date.available2004-10-08T20:37:23Z
dc.date.issued2002-01-01en_US
dc.identifier.otherAIM-2002-001en_US
dc.identifier.urihttp://hdl.handle.net/1721.1/6682
dc.description.abstractThe utility of vision-based face tracking for dual pointing tasks is evaluated. We first describe a 3-D face tracking technique based on real-time parametric motion-stereo, which is non-invasive, robust, and self-initialized. The tracker provides a real-time estimate of a ?frontal face ray? whose intersection with the display surface plane is used as a second stream of input for scrolling or pointing, in paral-lel with hand input. We evaluated the performance of com-bined head/hand input on a box selection and coloring task: users selected boxes with one pointer and colors with a second pointer, or performed both tasks with a single pointer. We found that performance with head and one hand was intermediate between single hand performance and dual hand performance. Our results are consistent with previously reported dual hand conflict in symmetric pointing tasks, and suggest that a head-based input stream should be used for asymmetric control.en_US
dc.format.extent1 p.en_US
dc.format.extent1612360 bytes
dc.format.extent298580 bytes
dc.format.mimetypeapplication/postscript
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.relation.ispartofseriesAIM-2002-001en_US
dc.subjectAIen_US
dc.titleExploring Vision-Based Interfaces: How to Use Your Head in Dual Pointing Tasksen_US


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