Postprocessing system for removing blocking artifacts in block-based codecs
US6320905A · kind A · utility
157Cited by
1References
4Claims
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Key dates
| Filing date | Jul 8, 1998 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Jul 8, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/86
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Video signal post-processor de-blocks signal by processing block edges, particularly vertical and/or horizontal neighboring pixels. Depending on boundary condition, received signal is filtered using smoothing LPF function. Low-memory post-processor system neither requires DCT block characteristics nor blurs image edges close to block boundary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.