Road speed limit identification method, road speed limit identification apparatus, electronic apparatus, computer program, and computer readable recording medium
US11227493B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 2019 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Dec 3, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a road speed limit identification method. The road speed limit identification method includes: obtaining a driving image captured during driving of a moving object; setting a region of interest in the obtained driving image and generating a grayscale-processed image on the basis of an image of the region of interest; detecting a speed limit sign image from the grayscale-processed image; calculating a first brightness value of a number region, a second brightness value of a border region, and a third brightness value of an in-border region other than the number region in the detected speed limit sign image; and identifying a speed limit displayed on a speed limit sign on the basis of the plurality of calculated brightness values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.