System for adjusting color image quality and method thereof
US8179478B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2008 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Mar 17, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/67
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for adjusting color image quality includes converting color video signal sources into component video signals including a luminance signal and chrominance signals. A signal axis rotation circuit performs coordination transformation on the chrominance signals in accordance with a hue calibration parameter; and a multiplier multiplies the coordinate-transformed chrominance signals with a chroma calibration parameter to obtain output chrominance signals. The output chrominance signals and the luminance signal together form a component chrominance signal, which is applied to and output by a chrominance signal inverse conversion unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.