Vehicle position estimation device and its method

Abstract

The invention provides an estimate device for a vehicle position and a method thereof, in a condition that the GPS information of the vehicle can not be received in a crossing adjoining region or the accuracy is reduced by using distance information and pixel position information of each pixel dimension of crossing adjoining traffic signs (such as traffic light or traffic display boards) displayed in the image, pixel dimension and position of the traffic signs for estimating the relative position between the traffic signs to the vehicle in the image are used. The estimate device for a vehicle position of the invention comprises: a traffic sign information supplying part, a traffic sign identifying part, a distance extraction part, a roadway correcting part and a vehicle position estimate part.

Description

technical field [0001] The present invention relates to a vehicle position estimating device and method thereof using the pixel size and position of a traffic sign on an image, and more specifically, to a vehicle position estimation method using a traffic sign (signal light or traffic display board, etc.) adjacent to an intersection appearing on an image The distance information of each pixel size and the position information of the pixel can be used to estimate the distance from the traffic sign to the vehicle when the GPS (Global Positioning System) information of the vehicle cannot be received in the adjacent area of ​​the intersection, or the accuracy decreases. A device and method for estimating vehicle position based on the relative position, pixel size and position of a traffic sign on an image. Background technique [0002] Generally, a vehicle navigation system uses a map matching method or dead reckoning to display the current position information of the vehicle at...

AI Technical Summary

Problems solved by technology

However, in places such as densely built areas and tunnels, where GPS reception is not possible, or the accuracy of GPS is significantly reduced, it is almost impossible to correct the accuracy of the vehicle's heading, especially in map matching.

Furthermore, even in an area where GPS signal reception is good, the vehicle position displayed on the navigation map and the actual vehicle position may differ from each other because the position of the vehicle is matched and displayed on the center line of the road during general map matching. The problem

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