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Road sign identification method and device, medium and terminal

A technology of road signs and recognition methods, which is applied in the field of electronic maps, can solve the problems that the accuracy of road sign recognition methods needs to be improved, and achieve the effect of improving accuracy, high accuracy, and increasing probability

Active Publication Date: 2020-05-19
ALIBABA GRP HLDG LTD
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Problems solved by technology

[0004] The accuracy of existing road sign recognition methods needs to be improved

Method used

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  • Road sign identification method and device, medium and terminal
  • Road sign identification method and device, medium and terminal
  • Road sign identification method and device, medium and terminal

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Embodiment Construction

[0070] As mentioned earlier, the accuracy of existing road sign recognition methods needs to be improved.

[0071] In a road sign recognition method, an image of a road surface can be collected, and the road recognition sign can be determined by identifying the image of the road surface. Road images are usually recorded and played back manually, which has low efficiency and recognition accuracy.

[0072] In another road sign recognition method, the three-dimensional point cloud data obtained by collecting the road surface can be recognized to obtain the road recognition sign in the three-dimensional point cloud data. Compared with the image data collected directly, the efficiency is higher because the data collection does not require manual intervention. However, the accuracy of identifying road signs in 3D point cloud data still needs to be improved.

[0073] For example, for ground markings with wear, occlusion, adhesion, etc., it is difficult to determine an accurate threshold t...

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Abstract

The embodiment of the invention discloses a road sign recognition method and device, a medium and a terminal, and the method can comprise the steps: obtaining a three-dimensional point cloud data setwhich comprises a plurality of three-dimensional point cloud data points obtained through the detection of a road; mapping the three-dimensional point cloud data set into a two-dimensional plane image; adopting a machine learning model to identify a road sign in the two-dimensional plane image; and inversely mapping the road sign in the two-dimensional plane image to a three-dimensional coordinateposition. The technical scheme in the embodiment of the invention is higher in accuracy.

Description

Technical field [0001] The present invention relates to the technical field of electronic maps, and in particular to a road sign recognition method and device, medium and terminal. Background technique [0002] An electronic map, that is, a digital map, is a map that is stored and consulted digitally using computer technology. It is a map that uses the collected map data to present it in a paperless manner. The application of electronic map is very extensive, for example, it can be applied to navigation or cruise process. [0003] The electronic map can include road signs on the road surface. Recognizing the road signs on the road surface is a common way to generate road signs in the electronic map. [0004] The accuracy of existing road sign recognition methods needs to be improved. Summary of the invention [0005] The technical problem solved by the embodiments of the present invention is to improve the accuracy of road signs. [0006] In order to solve the above technical problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/00G06T7/13G06T17/05G06K9/00
CPCG06T7/13G06T17/05G06T2207/10028G06T2207/30256G06T2207/20081G06V20/588G06T3/06
Inventor 吕天雄
Owner ALIBABA GRP HLDG LTD
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