How really effective are Multimodal Hints in enhancing Visual Target Spotting Some evidence from a usability study - Computer Science > Human-Computer InteractionReportar como inadecuado




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Abstract: The main aim of the work presented here is to contribute to computer scienceadvances in the multimodal usability area, in-as-much as it addresses one ofthe major issues relating to the generation of effective oral system messages:how to design messages which effectively help users to locate specificgraphical objects in information visualisations? An experimental study wascarried out to determine whether oral messages including coarse information onthe locations of graphical objects on the current display may facilitate targetdetection tasks sufficiently for making it worth while to integrate suchmessages in GUIs. The display spatial layout varied in order to test theinfluence of visual presentation structure on the contribution of thesemessages to facilitating visual search on crowded displays. Finally, threelevels of task difficulty were defined, based mainly on the target visualcomplexity and the number of distractors in the scene. The findings suggestthat spatial information messages improve participants- visual searchperformances significantly; they are more appropriate to radial structures thanto matrix, random and elleptic structures; and, they are particularly usefulfor performing difficult visual search tasks.



Autor: Suzanne Kieffer INRIA Rocquencourt - INRIA Lorraine - LORIA, Noëlle Carbonell INRIA Rocquencourt - INRIA Lorraine - LORIA

Fuente: https://arxiv.org/







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