Reduction of blocking artifacts in image decompression systems
US8515202B2 · kind B2 · utility
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30Claims
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Key dates
| Filing date | Nov 12, 2007 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | May 10, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/86
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for reducing blocking artefacts in a decompressed image signal includes inputting the decompressed video signal and detecting locations of block and image content edges therein. Image content and block edges are discriminated between to remove or conceal the image content edges and the remaining block edges transformed to produce an error correcting signal to smooth the block edges at the detected locations in a delayed version of the decompressed video signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.