US 11,906,310 B2
Map maintenance and verification
Chen Xie, San Francisco, CA (US); Matthew Fox, San Francisco, CA (US); Brian Joseph Donohue, San Francisco, CA (US); Kangyuan Niu, Northridge, CA (US); and Katherine Leung, Milpitas, CA (US)
Assigned to GM Cruise Holdings LLC, San Francisco, CA (US)
Filed by GM Cruise Holdings LLC, San Francisco, CA (US)
Filed on Feb. 7, 2023, as Appl. No. 18/106,554.
Application 18/106,554 is a continuation of application No. 16/836,799, filed on Mar. 31, 2020, granted, now 11,604,070.
Prior Publication US 2023/0184556 A1, Jun. 15, 2023
Int. Cl. G06F 16/00 (2019.01); G01C 21/32 (2006.01); G06F 16/23 (2019.01); G06F 16/29 (2019.01)
CPC G01C 21/32 (2013.01) [G06F 16/23 (2019.01); G06F 16/29 (2019.01)] 20 Claims
OG exemplary drawing
 
1. A method of validating a digital map comprising:
determining, by one or more processors and using a decay model, an accuracy estimate for each of one or more features associated with one or more geographic regions of the digital map, wherein the accuracy estimate for each of the one or more features that is determined by the decay model decreases as a time period between measurements of the one or more features increases;
receiving, by the one or more processors, change data indicating a discrepancy in a subset of the one or more features of the one or more geographic regions, wherein the change data comprises aggregated feature discrepancies received by a change detection database from one or more sources;
updating a change rate with respect to the aggregated feature discrepancies in the subset of the one or more features;
determining, by the one or more processors, a surveillance cadence based on an updated change rate and the accuracy estimate determined by the decay model, wherein the surveillance cadence indicates an accuracy of changes associated with the one or more features; and
based on the surveillance cadence, triggering, by the one or more processors, generation of a surveillance task that causes a vehicle to navigate to the one or more geographic regions for data collection.