Method and apparatus for detecting high level white noise in a sequence of video frames
US8472523B2 · kind B2 · utility
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5References
14Claims
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Key dates
| Filing date | Aug 15, 2005 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Apr 12, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/176
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and/or method for detecting white noise in a sequence of video frames, and a computer program product is described to affect the quantization step size. In the method/system the correlation between motion vectors of macroblocks is calculated and compared to a predefined threshold. The correlation between motion vectors is used as an indicator for noise in the frames. The quantization step size is then adapted according to the detected level of noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.