Image processing machine
US5329380A · kind A · utility
9Cited by
6References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 22, 1992 |
| Grant date | Jul 12, 1994 |
| Priority date | — |
| Expiry date | Jan 22, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4052
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing machine processes image data of a letter document into binary data which are then put through smoothing-out processing, and image data of a photograph document into binary data by a method in which the optical density of a document is retained, in order to provide high-quality, smooth binary images of both letter documents and photograph documents. One memory stores data both for smoothing-out processing in the case of a letter document and for binary-processing in the case of a photograph document. The memory is used selectively for either type of processing. Thus, circuitry for the processing is simplified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.