High-accuracy real-time road sign detection from images
US9092695B1 · kind B1 · utility
30Cited by
6References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 13, 2013 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Jun 13, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/56
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Objects, such as road signs, may be detected in real-time using a camera or other image capture device. As images are received through the camera, candidate signs are first detected. The detection of candidate signs employs constant-time normalized cross correlation, including generation of intermediate images and integral images, and applying a template of concentric, different sized shapes over the integral images. From the pool of candidate signs, false positives may be separated out using shape classification to identify actual road signs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.