Method for generating data in navigation electronic map

Abstract

The invention relates to a method for capturing and analyzing a road topology model and completing conversion of road topology data, in particular to a method for generating data in a navigation electronic map. The method comprises the following steps: determining exiting angles of convergent points of single lines and double lines in the electronic map; determining the attributes of roundabout road lines in the electronic map; determining the attributes of road lines within the intersection in the electronic map; creating a corresponding intersection object for each intersection point in theelectronic map; creating a corresponding directed arc object for each road in the electronic map; and creating a corresponding turning object for each directed arc with the ending point being the intersection in the electronic map, and generating the corresponding turning voice and suffix voice. The method has the beneficial effects of overcoming the defects of the electronic map provided by the map provider and providing effective data in the navigation electronic map for navigation path planning.

Description

technical field [0001] The invention relates to a method for capturing and analyzing road topological models and completing road topological data conversion. Background technique [0002] To provide navigation services to GPS navigation equipment, it is first necessary to plan a navigation path for it, which requires the use of electronic maps. Common electronic maps describe in detail various elements that constitute the road network itself, such as driving routes, road intersections, overpasses, etc. Electronic map providers (hereinafter referred to as map providers) generally use a single line to express a road when making electronic maps; Opposite double lines represent two different traffic flow directions respectively. Due to the phenomenon that some roads are represented by a part of a single line and the other part is represented by a double line, some problems of unclear expression inevitably occur at the junction (convergence) of the single line and the double li...

AI Technical Summary

Problems solved by technology

The map maker generates the corresponding steering voice in the electronic map according to the steering angle between the entering road and the exiting road. This method provides guidance for generating steering voices at simple intersections, but when broadcasting more complex intersections , there are still imperfections

For example, when there is a lead wire at the confluence of single-line and double-line, it will cause unreasonable turning voice broadcast, and there may also be two turning voices in the same direction (such as two "please turn right"), and it is not possible to control intersections and roundabouts. reasonable distinction

Therefore, the electronic map data provided by map vendors cannot be directly used for planning navigation routes

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