Method of updating map data, electronic device and storage medium

Patent metadata

Field	Value
Publication number	US-12313426-B2
Application number	US-202318110256-A
Country	US
Kind code	B2
Filing date	Feb 15, 2023
Priority date	Feb 16, 2022
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

A method of updating map data, an electronic device, and a storage medium, which relate to a field of computer technology, and in particular to intelligent transportation technology. The method of updating map data includes: acquiring a traffic event text, where the traffic event text includes location data and reference direction data; determining candidate road data in the map data based on the location data; determining target road data from the candidate road data based on the reference direction data; updating the target road data based on the traffic event text.

First claim

What is claimed is:

1. A computer-implemented method of updating electronic map data, the method comprising:
acquiring a traffic event text, wherein the traffic event text comprises location data and reference direction data, and the traffic event text comprises a traffic dynamic event officially released;
determining candidate road data in the electronic map data based on the location data;
determining target road data from the candidate road data based on the reference direction data; and
updating the target road data based on the traffic event text, to obtain the updated electronic map for navigation,
wherein the determining target road data from the candidate road data based on the reference direction data comprises:
determining target direction data based on the candidate road data; and
determining the candidate road data as the target road data, in response to determining that the target direction data is consistent with the reference direction data, and

wherein the determining target direction data based on the candidate road data comprises:
determining a geographic object from the electronic map data with a direction for the candidate road data as a search direction; and
determining, from attribute data of the geographic object, a first address identification as the target direction data, wherein the first address identification indicates going to a first address by passing the geographic object, and the first address corresponds to the first address identification.

2. The method of claim 1 , wherein the reference direction data comprises a second address identification, and
wherein the determining the candidate road data as the target road data in response to determining that the target direction data is consistent with the reference direction data comprises determining the candidate road data as the target road data, in response to determining that the first address identification is consistent with the second address identification.

3. The method of claim 1 , wherein the determining a geographic object from the electronic map data with a direction for the candidate road data as a search direction comprises determining, in a topological relationship graph, an associated node in turn with a node for the candidate road data as a starting point, and determining the geographic object from the electronic map data based on the node,
wherein the topological relationship graph is constructed based on a connection relationship between a plurality of road data, and
wherein the plurality of road data comprise the candidate road data, and each of the plurality of road data is used as one node.

4. The method of claim 1 , wherein the determining a candidate road data in the electronic map data based on the location data comprises:
determining a preset region based on the location data and a reference road size; and
determining, from the electronic map data, road data within the preset region as the candidate road data.

5. The method of claim 1 , further comprising:
performing a tokenization on the traffic event text to obtain a road identification and a road stake number; and
determining the location data based on the road identification and the road stake number.

6. The method of claim 1 , wherein the traffic event text comprises a road condition information, and
wherein the updating the target road data based on the traffic event text comprises updating a road condition of a target road corresponding to the target road data based on the road condition information.

7. An electronic device, comprising:
at least one processor; and
a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, and the instructions, when executed by the at least one processor, are configured to cause the at least one processor to at least:
acquire a traffic event text, wherein the traffic event text comprises location data and reference direction data, and the traffic event text comprises a traffic dynamic event officially released;
determine candidate road data in electronic map data based on the location data;
determine target road data from the candidate road data based on the reference direction data; and
update the target road data based on the traffic event text, to obtain the updated electronic map data for navigation,
wherein the determination of the target road data from the candidate road data based on the reference direction data comprises:
determination of target direction data based on the candidate road data; and
determination of the candidate road data as the target road data, in response to determination that the target direction data is consistent with the reference direction data, and

wherein the determination of the target direction data based on the candidate road data comprises:
determination of a geographic object from the electronic map data with a direction for the candidate road data as a search direction; and
determination, from attribute data of the geographic object, a first address identification as the target direction data, wherein the first address identification indicates going to a first address by passing the geographic object, and the first address corresponds to the first address identification.

8. The electronic device of claim 7 , wherein the reference direction data comprises a second address identification, and
wherein the instructions are further configured to cause the at least one processor to at least determine the candidate road data as the target road data, in response to determining that the first address identification is consistent with the second address identification.

9. The electronic device of claim 7 , wherein the instructions are further configured to cause the at least one processor to at least determine, in a topological relationship graph, an associated node in turn with a node for the candidate road data as a starting point, and determine the geographic object from the electronic map data based on the node,
wherein the topological relationship graph is constructed based on a connection relationship between a plurality of road data, and
wherein the plurality of road data comprise the candidate road data, and each of the plurality of road data is used as one node.

10. The electronic device of claim 7 , wherein the instructions are further configured to cause the at least one processor to at least:
determine a preset region based on the location data and a reference road size; and
determine, from the electronic map data, road data within the preset region as the candidate road data.

11. The electronic device of claim 7 , wherein the instructions are further configured to cause the at least one processor to at least:
perform a tokenization on the traffic event text to obtain a road identification and a road stake number; and
determine the location data based on the road identification and the road stake number.

12. The electronic device of claim 7 , wherein the traffic event text comprises a road condition information, and
wherein the instructions are further configured to cause the at least one processor to at least update a road condition of a target road corresponding to the target road data based on the road condition information.

13. A non-transitory computer-readable storage medium having computer instructions therein, wherein the computer instructions are configured to cause a computer system to at least:
acquire a traffic event text, wherein the traffic event text comprises location data and reference direction data, and the traffic event text comprises a traffic dynamic even

Assignees

• Beijing Baidu Netcom Sci & Tech Co Ltd

Inventors

• Li Zhuang
• Ge Dejin
• Pan Keyu
• Yu Wenwen
• Li Man
• Lu Zhen
• Cao Tingting
• Xia Deguo
• Yang Jianzhong
• Zhang Tianyu

Classifications

• H04L2209/84

  Vehicles · CPC title

• H04L9/3213

  using tickets or tokens, e.g. Kerberos (network architectures or network communication protocols for entities authentication using tickets in a packet data network H04L63/0807) · CPC title

• G01C21/3815

  Road data · CPC title

• G01C21/3811

  Point data, e.g. Point of Interest [POI] · CPC title

• G01C21/3415

  Dynamic re-routing, e.g. recalculating the route when the user deviates from calculated route or after detecting real-time traffic data or accidents · CPC title