Method for gamma correction and a device having gamma correction capabilities
US8614719B2 · kind B2 · utility
0Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2006 |
| Grant date | Dec 24, 2013 |
| Priority date | — |
| Expiry date | Apr 20, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/69
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device can perform gamma correction by receiving a non-gamma compensated input; selecting, in response to the input value, a selected approximating interval out of a group of low-brightness approximating intervals and out of a group of high-brightness approximating intervals; multiplying a portion of the input value by a selected approximating interval slope to provide an intermediate result; adding the intermediate result to a selected approximating interval offset to provide the gamma compensated output value; and outputting a gamma compensated output value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.