Adaptive filter to improve H-264 video quality
US7289562B2 · kind B2 · utility
17Cited by
1References
45Claims
0Family size
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Key dates
| Filing date | Aug 1, 2003 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Nov 11, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/80
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for reducing or eliminating coding artifacts in video pictures processed using intra block prediction methods, for example, according to the H.264 standard. The causes of the coding artifacts are identified to be the intra prediction modes with prediction directions that are not in the direction of the raster scan. Filtering the affected blocks with a simple one-dimensional spatial filter will reduce or even eliminate these coding artifacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.