Illumination estimation for images
US8391634B1 · kind B1 · utility
9Cited by
42References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2009 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Jan 4, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/60
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image comprising varying illumination is selected. Instances of a repeating pattern in the image is determined. Illumination values for pixels at locations within instances of the repeating pattern are calculated responsive to pixel intensities of pixels at corresponding locations in other instances of the repeating pattern. The varying illumination is removed form the image responsive to the illumination values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.