Halftone image reproduction
US6763144B1 · kind B1 · utility
4Cited by
9References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 1, 2000 |
| Grant date | Jul 13, 2004 |
| Priority date | — |
| Expiry date | Mar 1, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4055
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for performing halftoning of an image, using two 2-dimensional look up tables (LUTS). The first LUT receives coordinates of an image value and outputs a screen reference value which then serves, together with the image value as address for the second LUT. The output of the second LUT is the halftone value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.