Sciweavers

GIS
2009
ACM
14 years 6 months ago
Improved visibility computation on massive grid terrains
Jeremy Fishman, Herman J. Haverkort, Laura Toma
GIS
2009
ACM
14 years 6 months ago
Topological relations from metric refinements
Naive Geography’s premise “Topology matters, metric refines” calls for metric properties that provide opportunities for finergrained distinctions than the purely qualitative...
Max J. Egenhofer, Matthew P. Dube
GIS
2009
ACM
14 years 6 months ago
Constrained reverse nearest neighbor search on mobile objects
In this paper, we formalize the novel concept of Constrained Reverse k-Nearest Neighbor (CRkNN) search on mobile objects (clients) performed at a central server. The CRkNN query c...
Tobias Emrich, Hans-Peter Kriegel, Peer Kröge...
GIS
2009
ACM
14 years 6 months ago
A salience-based approach for the modeling of landscape descriptions
While conventional GIS maps have long been a privileged way for the integration and diffusion of geographical information, novel forms of representation and description of urban ...
Jean-Marie Le Yaouanc, Eric Saux, Christophe Clara...
GIS
2009
ACM
14 years 6 months ago
An agenda for the next generation gazetteer: geographic information contribution and retrieval
Gazetteers are key components of georeferenced information systems, including applications such as Web-based mapping services. Existing gazetteers lack the capabilities to fully i...
Carsten Keßler, Krzysztof Janowicz, Mohamed ...
GIS
2009
ACM
14 years 6 months ago
Tree detection from aerial imagery
We propose an automatic approach to tree detection from aerial imagery. First a pixel-level classifier is trained to assign a {tree, non-tree} label to each pixel in an aerial im...
Lin Yang, Xiaqing Wu, Emil Praun, Xiaoxu Ma
GIS
2009
ACM
14 years 6 months ago
Towards a probabilistic time geography
Time geography uses space-time volumes to represent the possible locations of a mobile agent over time in a x-y-t space. Space-time volumes are qualitative statements, enabling qu...
Stephan Winter
GIS
2009
ACM
15 years 28 days ago
The Global Network of Outdoor Webcams: Properties and Applications
Categories and Subject Descriptors General Terms Keywords
Nathan Jacobs, Walker Burgin, Nick Fridrich, Austi...
GIS
2009
ACM
15 years 28 days ago
From GPS Traces to a Routable Road Map
This paper presents a method for automatically converting raw GPS traces from everyday vehicles into a routable road network. The method begins by smoothing raw GPS traces using a...
Lili Cao, John Krumm
GIS
2009
ACM
15 years 28 days ago
Efficient Viewpoint Assignment for Urban Texture Documentation
We envision participatory texture documentation (PTD) as a process in which a group of users (dedicated individuals and/or general public) with camera-equipped mobile phones parti...
Cyrus Shahabi, Farnoush Banaei Kashani, Houtan Shi...