Coding distortion removal method by selectively filtering based on a pixel difference
US8369421B2 · kind B2 · utility
95Cited by
19References
1Claims
0Family size
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Key dates
| Filing date | Oct 30, 2007 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Dec 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/86
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Mosaic-shaped block noise occurs when a compressed video signal is reproduced. This block noise is removed, but removing block noise from every block using a deblocking filter imposes a significant load on the deblocking filter. This load is therefore reduced by determining whether coding distortion removal (deblocking) is necessary, and applying a deblocking filter only when needed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.