Image processing device having function of detecting dotted-image area
US5473444A · kind A · utility
11Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1995 |
| Grant date | Dec 5, 1995 |
| Priority date | — |
| Expiry date | Mar 27, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/40075
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing device includes a first unit for detecting a pixel at which a predetermined local variation of image data occurs, a second unit for detecting a density relating to the above pixel within a predetermined scanning area, and a third unit for determining whether or not the image data forms a dotted-image area on the basis of the density detected by the second unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.