Method and apparatus for improving quality of composite video signal and method and apparatus for removing artifact of composite video signal
US7986854B2 · kind B2 · utility
13Cited by
1References
15Claims
0Family size
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Key dates
| Filing date | Jun 11, 2007 |
| Grant date | Jul 26, 2011 |
| Priority date | — |
| Expiry date | May 25, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/86
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of improving picture quality in a composite video burst signal includes dividing the composite video burst signal into a plurality of frequency bands using a low pass filter and a high pass filter, performing wavelet packet filtering of frequency bands including a chrominance signal having energy higher than a specified threshold among the plurality of frequency bands, and performing Wiener filtering of frequency bands including a chrominance signal having energy lower than a specified threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.