Method for instant recognition of traffic lights countdown image
US9305224B1 · kind B1 · utility
2Cited by
21References
2Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 29, 2014 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Oct 18, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30252
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for instant recognition of traffic lights countdown image that can quickly scan and confirm the circular feature image of a traffic light, and retrieve the countdown image thereof by calculating the displacement ratio from the circular image, then enhance, cut and converse the countdown image to display a feature image thereof, and proceed similarity comparison with collected data to calculate the percentage of similarity. The method eventually brings out a result from the image comparisons, so as to fulfill the effectiveness of searching and instantly recognizing the countdown image of a traffic light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.