Real-time color classification for street vehicles
US10878254B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2019 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Dec 20, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/698
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus includes a first circuit and a second circuit. The first circuit may be configured to calculate a feature descriptor for each pixel of an image. The feature descriptor generally comprises sixteen discriminative feature values. The feature values are generally computed based on arithmetic combinations of a number of neighboring pixels at predetermined locations around each pixel. The second circuit may be configured to implement a color classification process combining multiple weak depth-two decision trees in a cascade. The second circuit may generate a plurality of likelihood values expressing a likelihood of a specific color road marking at each pixel location of the image using the feature descriptor of each pixel of the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.