US 12,174,041 B2
Road updating method and apparatus for electronic map, computer device, and storage medium
Xiao Yuan Wu, Shenzhen (CN); and Yuejin Wu, Shenzhen (CN)
Assigned to Tencent Technology (Shenzhen) Company Limited, Shenzhen (CN)
Filed by TENCENT TECHNOLOGY (SHENZHEN) COMPANY LTD, Guangdong (CN)
Filed on Feb. 24, 2022, as Appl. No. 17/679,736.
Application 17/679,736 is a continuation of application No. PCT/CN2021/074626, filed on Feb. 1, 2021.
Claims priority of application No. 202010283806.1 (CN), filed on Apr. 13, 2020.
Prior Publication US 2022/0178714 A1, Jun. 9, 2022
Int. Cl. G01C 21/00 (2006.01); G01C 21/34 (2006.01)
CPC G01C 21/387 (2020.08) [G01C 21/3461 (2013.01); G01C 21/3896 (2020.08)] 20 Claims
OG exemplary drawing
 
1. A road updating method for an electronic map, performed by at least one processor, the method comprising:
loading electronic map data for an electronic map, from a nonvolatile data storage device;
acquiring a target road in the electronic map, the target road being at least one of an intrinsic upper road of an overpass or an intrinsic lower road of the overpass;
acquiring a target node of the target road, the target node being at least one of a first node of the target road or a last node of the target road;
acquiring visible points within a preset range of the target node;
determining path lengths between the visible points and the target node;
determining an extended road of the target node according to the path lengths between the visible points and the target node; and
updating the electronic map data in the nonvolatile data storage device based on the extended road.