A massively parallel architecture for a self-organizing neural pattern recognition machine
Computer Vision, Graphics, and Image Processing
Automatic extraction of roads from aerial images based on scale space and snakes
Machine Vision and Applications
Modeling Moving Objects over Multiple Granularities
Annals of Mathematics and Artificial Intelligence
Shape-Based Similarity Query for Trajectory of Mobile Objects
MDM '03 Proceedings of the 4th International Conference on Mobile Data Management
Modular neural networks for map-matched GPS positioning
WISEW'03 Proceedings of the Fourth international conference on Web information systems engineering workshops
Phonetic feature discovery in speech using snap-drift learning
ICANN'06 Proceedings of the 16th international conference on Artificial Neural Networks - Volume Part II
Snap-drift self organising map
ICANN'10 Proceedings of the 20th international conference on Artificial neural networks: Part II
Road extraction using smart phones GPS
Proceedings of the 2nd International Conference on Computing for Geospatial Research & Applications
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Research towards an innovative solution to the problem of automated updating of road network databases is presented. It moves away from existing methods where vendors of road network databases either go through the time consuming and logistically challenging process of driving along roads to register changes or use update methods that rely on remote sensing images. The solution presented here would allow users of road network dependent applications (e.g. in-car navigation system or Sat Nav) to passively collect characteristics of any ''unknown route'' (departure from the known roads in the database) on behalf of the provider. These data would be processed either by an on-board artificial neural network (ANN) or transferred back to the Sat Nav provider and input into their ANN along with similar track data provided by other service users, to decide whether or not to automatically update (add) the ''unknown road'' to the road database. The solution presented here addresses the feasibility of identifying roads and assigning them into classes from recorded global positioning system (GPS) trajectory data. GPS trajectory data collected in London are analysed using a snap-drift neural network (SDNN) which categorises them into their strongest natural groupings, by combining clustering with feature detection in a single ANN. The key variables required are discussed. We have demonstrated that the SDNN offers a fast method of learning that preserves feature discovery. Using only GPS trajectory information, the SDNN is able to group collected points to reveal travelled road segments. The results showed that relying only on the winning node, a grouping accuracy of about 71% is achieved compared to 51% from learning vector quantisation (LVQ). On analysis and further experimentation with the SDNN d-nodes a grouping accuracy of nearly 100% was achieved, but with a high count of unique d-node combinations.