TilePic: a file format for tiled hierarchical data
Proceedings of the 1st ACM/IEEE-CS joint conference on Digital libraries
Digital libraries' support for the user's 'information journey'
Proceedings of the 5th ACM/IEEE-CS joint conference on Digital libraries
Modeling collaborative semantics with a geographic recommender
ER'07 Proceedings of the 2007 conference on Advances in conceptual modeling: foundations and applications
Building geospatial data collections with location-based games
KI'09 Proceedings of the 32nd annual German conference on Advances in artificial intelligence
A mobile sensor data acquisition and evaluation framework for crowd sourcing data
Proceedings of the Second ACM SIGSPATIAL International Workshop on Crowdsourced and Volunteered Geographic Information
Elderly People Daily Life Monitoring Based on GPS Trajectory with Non-uniform Sampling
Proceedings of the Second International Conference on Innovative Computing and Cloud Computing
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We propose the idea of an online, user submitted digital library of recreation trails. Digital libraries of trails offer advantages over paper guidebooks in that they are more accurate, dynamic and not limited to the experience of the author(s). The basic representation of a trail is a GPS track log, recorded as recreators travel on trails. As users complete trips, the GPS track logs of their trips are submitted to the central library voluntarily. A major problem is that track logs will overlap and intersect each other. We present a method for the combination of overlapping and intersecting GPS track logs to create a network of GPS trails. Each trail segment in the network can then be characterized by automatic and manual means, producing a digital library of trails. We also describe the TopoFusion system which creates, manages and visualizes GPS data, including GPS networks.