To relate typical survey map features to the real world during navigation, users must make time-consuming, error-prone cognitive transformations in scale and rotation and make frequent realignments over time. In this paper, we introduce SkyMap, a novel immersive display device method that presents a world-scaled and world-aligned map above the user that evokes a huge mirror in the sky. This approach, which we have implemented in a VR-based testbed, potentially reduces cognitive effort associated with survey map use.

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