Adaptive color transient improvement
US7271851B2 · kind B2 · utility
6Cited by
15References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2003 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Jul 7, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/646
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A superior Color Transient Improvement technique is adaptive to the local image features, so that more natural color edge transition improvement can be accomplished. A gain control function is provided that depends on the local image feature so that different regions of the image can be treated differently. Further, a correction signal is controlled in such a way (by the local image feature) that neither undershoot nor overshoot occurs, eliminating the need for post-processing for undershoot/overshoot removal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.