Navigation dans de grands ensembles non structurés de documents visuels

Abstract : The goal of this thesis is to propose and to assess a 3D representation of large unstructured collections of images. The purpose is to improve comfort of visual search, to reduce search times and to better support memorization of documents'locations, compared with standard photo browsers. With a representation as a vertical cylinder, we designed two visualizations: photos are plastered on the inner or the outer side of the cylinder, to implement 2 common interaction metaphors, respectively locomotion and manipulation. 3 experimental studies were performed, with the same methodology: subjects performed 2 common types of visual search tasks. The first study is exploratory, the second one compares both 3D views in-depth and the last one compares 3D views with a standard 2D view. In this study, an eye-tracker helps us to understand relations between geometrical features and visual exploration strategies. 3D views are preferred by a majority of participants. Preferences are not influenced by performances; static visual features were mainly used to justified preferences. Visual exploration strategies are mainly influenced by the common dynamic visual feature (i.e., horizontal scrolling), which is an advantage for the inner view. At last, 3D views ensure a better comfort of visual search, with a better gaze guidance (especially the inner view) and by minimizing uncoordinated saccades which were observed in the 2D view.
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Olivier Christmann. Navigation dans de grands ensembles non structurés de documents visuels. Autre [cs.OH]. Université Henri Poincaré - Nancy 1, 2008. Français. ⟨NNT : 2008NAN10046⟩. ⟨tel-01748451⟩

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