Method and system for automatic detection of road network topology changes based on GPS space-time trajectory
A technology of space-time trajectory and topology change, which is applied in the fields of instruments, calculations, and electrical digital data processing, etc. It can solve problems such as complex urban road network structure, low accuracy of urban GPS data, affecting matching effect and changing detection results, etc.
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[0073] The present invention can be realized by vehicle-mounted GPS, and the essence of the present invention is: the road topology relationship represented by the vehicle-mounted GPS time-space trajectory is compared with the road topology relationship represented by the electronic map to obtain the road network topology change, and then realize the change detection of the road network topology. At present, the domestic taxi GPS drives in the streets of the city every day, and the GPS space-time trajectory spreads over any road and section of the city. The GPS space-time trajectory data collected by the taxi GPS can spread all over the city in a short time. By analyzing the GPS space-time trajectory The topological properties of the road network can be compared with the existing electronic map road topological relationship, and the detection of road network topology changes can be completed. The invention also establishes the corresponding relationship between the topology det...
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