Method and apparatus for modeling film grain patterns in the frequency domain
US7738721B2 · kind B2 · utility
4Cited by
25References
12Claims
0Family size
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Key dates
| Filing date | Apr 7, 2004 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Jan 28, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20204
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Film grain patterns can be modeled in the frequency domain by estimating the cut frequencies that define a 2D band-pass filter. The film grain parameters can be conveyed in accordance with the ITU-T H.264|MPEG-4 AVC standard in an SEI message allowing film grain reinsertion at a decoder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.