Enhancement of photographs using virtual earth

Participants
Institutions
  • WG Deussen (Visual Computing)
Publications
    Kopf, Johannes; Lischinski, Dani; Deussen, Oliver; Cohen-Or, Daniel; Cohen, Michael (2009): Locally adapted projections to reduce panorama distortions Computer Graphics Forum. 2009, 28(4), pp. 1083-1089. ISSN 0167-7055. Available under: doi: 10.1111/j.1467-8659.2009.01485.x

Locally adapted projections to reduce panorama distortions

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Displaying panoramic and wide angle views on a flat 2D display surface is necessarily prone to distortions.
Perspective projections are limited to fairly narrow view angles. Cylindrical and spherical projections can show full 360° panoramas, but at the cost of curving straight lines, interfering with the perception of salient shapes in the scene. In this paper, we introduce locally-adapted projections. Such projections are defined by a continuous projection surface consisting of both near-planar and curved parts. A simple and intuitive user interface allows the specification of regions of interest to be mapped to the near-planar parts, thereby reducing bending artifacts. We demonstrate the effectiveness of our approach on a variety of panoramic and wide angle images, including both indoor and outdoor scenes.

Origin (projects)

    Chen, Billy; Neubert, Boris; Ofek, Eyal; Deussen, Oliver; Cohen, Michael F. (2009): Integrated videos and maps for driving directions Proceedings of the 22nd annual ACM symposium on User interface software and technology - UIST '09. New York, New York, USA: ACM Press, 2009, pp. 223-232. ISBN 978-1-60558-745-5. Available under: doi: 10.1145/1622176.1622218

Integrated videos and maps for driving directions

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While onboard navigation systems are gaining in importance, maps are still the medium of choice for laying out a route to a destination and for way finding. However, even with a map, one is almost always more comfortable navigating a route the second time due to the visual memory of the route. To make the first time navigating a route feel more familiar, we present a system that integrates a map with a video automatically constructed from panoramic imagery captured at close intervals along the route. The routing information is used to create a variable speed video depicting the route. During playback of the video, the frame and field of view are dynamically modulated to highlight salient features along the route and connect them back to the map. A user interface is demonstrated to allow exploration of the combined map, video, and textual driving directions. We discuss the construction of the hybrid map and video interface. Finally, we report the results of a study that provides evidence of the effectiveness of such a system for route following.

Origin (projects)

Funding sources
Name Finanzierungstyp Kategorie Project no.
Industrie third-party funds research funding program 642/07
Further information
Period: since 31.12.2007