Video quality adaptive coding artifact reduction
US7865035B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2005 |
| Grant date | Jan 4, 2011 |
| Priority date | — |
| Expiry date | Nov 4, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video quality adaptive coding artifact reduction system has a video quality analyzer, an artifact reducer, and a filter strength controller. The video quality analyzer employs input video quality analysis to control artifact reduction. The video quality analyzer accesses the video quality of the decoded video sequence to estimate the input video quality. The filter strength controller globally controls the filter strength of the artifact reducer based on the video quality estimate by the video quality analyzer. For low quality input video, the filter strength controller increases the artifact reduction filter strength to more efficiently reduce the artifact. For high quality input video, the filter strength controller decreases the artifact reduction filter strength to avoid blurring image detail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.