Filtering method for removing block artifacts and/or ringing noise and apparatus therefor
US7561623B2 · kind B2 · utility
17Cited by
10References
3Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 30, 2003 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | May 16, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/895
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided are a filtering method and apparatus for removing blocking artifacts and ringing noise. The filtering method includes transforming video data on a block-by-block basis, and detecting the presence of an edge region in the video data by checking the distribution of values obtained by the transformation. Accordingly, it is possible to completely remove blocking artifacts and/or ringing noise by more effectively detecting the presence of an edge region in video data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.