Video signal processing with added probabilistic dither
US5175807A · kind A · utility
21Cited by
60References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1991 |
| Grant date | Dec 29, 1992 |
| Priority date | — |
| Expiry date | Jun 7, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/46
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system in which a characteristic of individual picture points is provided to an accuracy of m binary bits but conveyed by n bits, where n is less than m. The value of a lower order bit of the n bit signal is switched to cause said binary value to represent, for any one picture point, either a value above or a value below the original value. The new values are distributed without order among the picture points with a probability dependent upon the value of the (m-n) lowest order bits of the desired value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.