Bit-accurate film grain simulation method based on pre-computed transformed coefficients
US9098916B2 · kind B2 · utility
2Cited by
76References
12Claims
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Key dates
| Filing date | Oct 26, 2005 |
| Grant date | Aug 4, 2015 |
| Priority date | — |
| Expiry date | Jan 8, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20204
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Creation of a Bit-accurate film grain pattern for blending in an image block occurs by first establishing a set of bit-accurate transformed coefficients. The set of bit-accurate transformed coefficients undergo frequency filtering and a subsequent bit-accurate inverse transformation to yield the film grain pattern. The film grain pattern can then undergo blending with an image block to restore the look of film to the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.