Construction method and construction device of high-precision map

Abstract

The invention discloses a high-precision map construction method and device, and the method comprises the steps: carrying out the pedestrian crossing region extraction of a pedestrian crossing image of a target pedestrian crossing, determining all vertexes corresponding to all pedestrian crossing lines according to all the extracted pedestrian crossing lines of the pedestrian crossing region, and carrying out the calculation of the vertexes of all the pedestrian crossing lines, then, the contour line of each pedestrian crossing area is determined according to each vertex, and the overall contour of the extracted target pedestrian crossing is clearer and more accurate in this way, so that a high-precision map of the area corresponding to the target pedestrian crossing can be constructed by directly using the extracted contour line of the target pedestrian crossing; therefore, the working difficulty of the drawing personnel is reduced, and the drawing efficiency of the high-precision map is improved.

Description

technical field [0001] This specification relates to the field of computer technology, and in particular to a method and device for constructing a high-precision map. Background technique [0002] At present, with the wide application of high-precision maps in various fields, more and more attention has been paid to the drawing of high-precision maps, and the drawing of high-precision maps requires automatic element extraction of images of actual scenes, and Cartographers perform further drawing work on the basis of the results of automatic element extraction, so as to obtain the final high-precision map. [0003] Among the elements extracted automatically, the pedestrian crosswalk is one of the road elements with high frequency in the road environment, and its importance in the drawing of high-precision maps is self-evident. In this method, either a single crosswalk line of the crosswalk can only be extracted, but the overall outline of the crosswalk cannot be extracted, o...

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Problems solved by technology

[0003] Among the elements extracted automatically, the pedestrian crosswalk is one of the road elements with high frequency in the road environment, and its importance in the drawing of high-precision maps is self-evident. In this method, either a single crosswalk line of the crosswalk can only be extracted, but the overall outline of the crosswalk cannot be extracted, or the overall outline of the crosswalk can only be simply drawn as a rectangle, and the overall outline of the complex pedestrian crosswalk cannot be extracted. Therefore, the prior art The overall outline of various pedestrian crossings cannot be extracted well, so that the cartographer manually draws on the result of automatic element extraction, which seriously affects the drawing efficiency of high-precision maps and increases the work difficulty of the cartographer

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