Method and apparatus for reading film grain patterns in a raster order in film grain simulation
US7982743B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2005 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Mar 15, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20204
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method and apparatus for reading film grain patterns in a raster order in film grain simulation including establishing a pseudo-random starting position, repeating the pseudo-random starting position for each line of a group of film grain blocks, and using a different pseudo-random starting position for each display line of a next group of film grain blocks. In various embodiments of the present invention, the different pseudo-random starting positions are triggered by resetting at least one seed value of a pseudo-random number generator implemented to determine said pseudo-random starting positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.