Color transient improvement unit and method to reduce blurring at color transients in video images
US7532255B2 · kind B2 · utility
3Cited by
5References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 4, 2004 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Aug 5, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/86
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A color transient improvement unit and method for improving color transients to remove blurring along the edges of color transitions is presented. A transient characterization unit calculates various transient characterization values for a color transient detection window surrounding a current pixel. A transient threshold unit analyzes the transient characterization values to determine whether the color transient detection window contains a color transition. If a color transition exists, a transient correction unit generates an improved U chrominance value and an improved V chrominance value for the current pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.