Mining map data to predict turn restrictions
US12429355B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2023 |
| Grant date | Sep 30, 2025 |
| Priority date | — |
| Expiry date | Dec 18, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/582
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is a system for mining map data to automatically identify and/or predict turn restrictions. The systems uses street-level imagery to recognize and locate posted signs (e.g., physical signs, electronic signs) that signal, or are in some way related to, a turn restriction at an intersection. Then, the techniques use a cascade of machine learning models to accurately predict whether the recognized and located signs impose the turn restriction at the intersection. Consequently, the human effort required to identify turn restrictions is greatly decreased, if not completely eliminated. Furthermore, electronic maps can more efficiently be expanded and/or updated which improves the experience for vehicle drivers that reply upon the electronic maps for directions from original locations to destination locations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.