Error diffusion system
US5130823A · kind A · utility
25Cited by
11References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1991 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Jun 27, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4052
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
For highlight or dark areas of images, the error terms diffused to neighborhood pixels include components which are periodic with respect to a wavelength where the wavelength is a function of the density level of the pixels from which the error terms are diffused. In this manner, patterned artifacts or "worms" in the highlight or dark areas of the images are reduced or illuminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.