Real-scene-based path guidance information expression method and device

Abstract

The invention relates to a path guide information expressing method and device based on live-action. The method includes the following steps that matching correlation preprocessing is carried out on a live-action point and a two-dimensional road network; according to navigation steering guide information, guide point information, road entering information and road exiting information are determined; the longitude and latitude coordinates of a live-action observation point are calculated according to longitude and latitude coordinates of a guide point; according to the calculated longitude and latitude coordinates of the live-action observation point, a live-action picture of the coordinate position is obtained from a live-action data base; the back-projection pixel coordinate position, on a live-action guide picture, of the guide point is calculated; according to the back-projection position, the display angle of the live-action guide picture is calculated; the picture back-projection positions of a road entering shape point and a road exiting shape point are calculated, and then guide back-projection information of a road is marked in an arrow form according to the traveling direction. The path guide information expressing method and device provide more accurate navigation information indications for a user and can ensure that marking information is accurately marked on the correct road.

Description

technical field [0001] The invention relates to the field of car navigation, in particular to a method and device for expressing path guidance information based on real scenes. Background technique [0002] The current navigation products often use the form of simulated guidance enlarged maps in the process of intersection guidance, but the guidance simulation maps of many complex intersections are not highly recognizable and cannot achieve good guidance effects. The form of real-scene pictures has the advantage of no words in terms of authenticity, which is almost completely consistent with the real environment. However, how to present the intersection guidance and pointing information on the real-scene pictures is the most important step to realize the real-scene guidance, and the real-scene guidance also has real-scene The picture cannot fully and clearly show the overall picture of the intersection and the problem that the guide arrow deviates too much from the road on t...

AI Technical Summary

Problems solved by technology

[0002] Current navigation products, in the process of guidance at intersections, often use the form of simulated guidance enlarged maps, but the guidance simulation maps of many complex intersections are not highly recognizable, nor can they achieve a good guidance effect

The form of real-scene pictures has the advantage of no words in terms of authenticity, which is almost completely consistent with the real environment. However, how to present the intersection guidance and pointing information on the real-scene pictures is the most important step to realize the real-scene guidance, and the real-scene guidance also has real-scene The picture cannot fully and clearly show the overall picture of the intersection and the problem that the guide arrow deviates too much from the road on the real picture

The purpose of the present invention is to solve the problem that the display of the intersection is not comprehensive and clear, and the guide arrow is not reasonably covered on the picture road, so as to realize the real-scene guidance effect that the real-scene picture intersection display is clear and reasonable, and the guide arrow is projected accurately on the road

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