NDLI: 3D Organization of 2D Urban Imagery

Content Provider	IEEE Xplore Digital Library
Author	Cho, P.
Copyright Year	2008
Abstract	Working with New York data as a representative and instructive example, we fuse aerial ladar imagery with satellite pictures and Geographic Information System (GIS) layers to form a comprehensive 3D urban map. Digital photographs are then mathematically inserted into this detailed world space. Reconstruction of the photos' view frusta yields their cameras' locations and pointing directions which may have been a priori unknown. It also enables knowledge to be projected from the urban map onto georegistered image planes. For instance, absolute geolocations can be assigned to individual pixels, and GIS annotations can be transferred from 3D to 2D. Moreover, such information propagates among all images whose view frusta intercept the same urban map location. We demonstrate how many imagery exploitation challenges (e.g. identify all photos containing some stationary ground target, quantify match between two pictures) become mathematically tractable once a 3D framework for analyzing 2D images is adopted. Finally, we close by briefly discussing future applications of this work to photo-based querying of urban knowledge databases.
File Size	935177
File Format	PDF
ISBN	9781424428076
DOI	10.1109/IGARSS.2008.4778934
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-07-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Laser radar Geographic Information Systems Cities and towns Satellites Fuses Geometry Cameras Image analysis Spaceborne radar Aircraft image registration
Content Type	Text
Resource Type	Article

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