Image processor and image processing method handling multilevel image data
US6292268A · kind A · utility
15Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1998 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Sep 1, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4052
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processor converts pixel data represented with m gradations into pixel data represented with n gradations by using the error diffusion method. The m and n are both given integers and satisfy 2<n<m. Not only the error but also a weight assigning value is added to pixel data to be converted. The weight assigning value is determined according to the values of m and n.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.