System and method for road sign ground truth construction with a knowledge graph and machine learning
US11605232B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Aug 27, 2020 |
| Grant date | Mar 14, 2023 |
| Priority date | — |
| Expiry date | Sep 10, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/82
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of road sign classification utilizing a knowledge graph, including detecting and selecting a representation of a sign across a plurality of frames, outputting a prompt initiating a request for a classification associated with the representation of the sign, classifying one or more images including the sign, querying the knowledge graph to obtain a plurality of road sign classes with at least one same attribute as the sign, and classifying the sign across the plurality of frames in response to a confidence level exceeding a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.