Method and apparatus for sparsity-based de-artifact filtering for video encoding and decoding
US9723330B2 · kind B2 · utility
2Cited by
82References
29Claims
0Family size
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Key dates
| Filing date | Nov 18, 2009 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | Feb 10, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/80
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus are provided for sparsity-based de-artifact filtering for video encoding and decoding. An apparatus includes an encoder (400) for encoding at least a portion of an image by grouping regions within the portion based on a grouping metric, transforming the grouped regions, adaptively performing de-artifact filtering on the transformed regions using a de-artifacting filter (413) included in the encoder, inverse transforming the de-artifacted regions to create replacement regions, and restoring the replacement regions to positions with the image from which the regions were taken prior to the grouping.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.