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Tse, E., Hancock, M. and Greenberg, S. (2007)
Speech-Filtered Bubble Ray: Improving Target Acquisition on Display Walls. Research report iLab-2007-2, Grouplab, Dept. Computer Science, University of Calgary. Video and abstract, duration 1:33.
Type: Public research report. November.
Note: video was presented publicly at the ACM ICMI’07 conference.
Abstract.
This video illustrates the speech-filtered bubble ray, a technique that allows people interact with large interactive display walls at a distance. It also contrasts this technique to ray-casting and bubble cursors. The basic method for target acquisition is by ray casting a cursor from one’s pointing finger or hand position; the problem is that selection is slow and error-prone with small targets. A better method is the bubble cursor that resizes the cursor’s activation area to effectively enlarge the target size. Our method is the speech-filtered bubble ray that uses speech to transform a dense target space into a sparse one. In a controlled evaluation, people were faster and preferred using the speech-filtered bubble ray over the standard bubble ray and ray casting approach.
Keywords: Large display walls, speech, gestures, speech filtering, multimodal, freehand interaction, pointing.