Image processing apparatus using inclined line screens to reduce Moire
US4903123A · kind A · utility
35Cited by
13References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1988 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | Jun 8, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/52
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is disclosed an apparatus for processing a halftone image into a digital dot image. There are generated plural dots for the data of each pixel so as to form line screens in such a manner that smallest ones of the dots among the pixels constitute a line screen while other dots constitute line screens inclined to the scanning direction, in order to reduce Moire fringe pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.