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In this paper, we explore techniques that aim to improve site understanding for outdoor Augmented Reality (AR) applications. While the first person perspective in AR is a direct way of filtering and zooming on a portion of the data set, it severely narrows overview of the situation, particularly over large areas. We present two interactive techniques to overcome this problem: multi-view AR and variable perspective view. We describe in details the conceptual, visualization and interaction aspects of these techniques and their evaluation through a comparative user study. The results we have obtained strengthen the validity of our approach and the applicability of our methods to a large range of application domains.
augmented reality, comparative user study, extended overview techniques, outdoor augmented reality application, site understanding, data set portion filtering, data set portion zooming, multiview AR interactive techniques, variable perspective view interactive techniques, Cameras, Data visualization, Three dimensional displays, Mobile communication, Navigation, Solid modeling, Context, navigation., Information Interfaces and Presentation, mobile augmented reality, multi-perspective views, situation awareness
D. Schmalstieg, E. Kruijff, R. Grasset, E. Veas, "Extended Overview Techniques for Outdoor Augmented Reality", IEEE Transactions on Visualization & Computer Graphics, vol. 18, no. , pp. 565-572, April 2012, doi:10.1109/TVCG.2012.44
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