Apparatus and method for detecting bar-type traffic sign in traffic sign recognition system
US9805277B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 2016 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Apr 29, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/7715
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed are an apparatus and a method for detecting a bar-type sign in a traffic sign recognition system. The method may include a traffic sign detection step of detecting a traffic sign from image information including the traffic sign; a recognition region setting step of setting a recognition region on the traffic sign detected through the traffic sign detection step; a principal component analysis (PCA) operation processing step of applying a PCA algorithm to all pixels in the recognition region set through the recognition region setting step, and determining an eigenvector; and a sign determination step of determining an angle “α” of the eigenvector, comparing a deviation “d” of the determined angle with a threshold value “Pt”, and determining whether to correspond to a bar-type sign.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.