Method and system for extracting road intersections in high-precision map production

Abstract

The embodiments of the present invention provide a method and system for extracting road intersections in high-precision map production. First, data collected by a collection vehicle is obtained, and an image target detection algorithm is used to detect and extract intersection element targets in a panoramic image, and combine with trajectory information data to obtain laser points. The location information of the intersection element target in the cloud. Then, according to the position information of the intersection element target in the laser point cloud, the intersection point cloud block in the laser point cloud is obtained; finally, the key feature points of the intersection element target are extracted from the two-dimensional bird's-eye view of the intersection point cloud block, and the intersection polygon is constructed. . It realizes fully automatic extraction of intersections in high-precision map production, and is suitable for a variety of urban road collection scenarios, which can quickly help operators locate intersections and greatly improve the efficiency of high-precision map intersection production. In addition, when detecting intersections, other elements such as intersections are correlated to detect intersections, which greatly reduces the missed detection rate of intersections.

Description

technical field [0001] The invention relates to the field of automatic driving high-precision map production, in particular to a method and system for extracting road intersections in high-precision map production. Background technique [0002] High-precision maps contain a large amount of driving assistance information, and road networks are an important part of high-precision map production. Due to the many elements of intersection production and complex road intersections, production is time-consuming and labor-intensive. Therefore, a method and system for extracting road intersections in high-precision map production are urgently needed to solve this problem. SUMMARY OF THE INVENTION [0003] The invention provides a method and system for extracting road intersections in high-precision map production, which are used to solve the problems of time-consuming and labor-intensive production of high-precision map intersections due to many intersection production elements and...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method and system for extracting road intersections in the production of high-precision maps, which are used to solve the problem of time-consuming and labor-intensive production of high-precision map intersections due to the large number of production elements and complex road intersections in the current high-precision map production process

Images