Method and apparatus for performing dithering
US7233339B2 · kind B2 · utility
3Cited by
6References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2004 |
| Grant date | Jun 19, 2007 |
| Priority date | — |
| Expiry date | Jan 14, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/2055
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for dithering may provide filtering M bit data and performing a temporal/spatial compensation based on LSB of the filtered M bit data. The dithering may be performed on a selected frame. M-2 bits of the M bit data may be specified as a reference gray scale value resulting from the filtered M bit data. Temporal compensation may provide adding a weight of ‘0’ or ‘1’ to the reference gray scale value, for example M-2 bit data. Spatial compensation may include horizontal or vertical mirroring, and may be performed to represent whole gray scales without saturation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.