Video correlator for video format unit
US4601056A · kind A · utility
10Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1984 |
| Grant date | Jul 15, 1986 |
| Priority date | — |
| Expiry date | Aug 13, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video correlator is provided for use in an image processing system wherein video data representative of a document image or portions thereof is received in a gray level data format in which the image is composed of a plurality of cells for enhancing the black/white characterization of each cell. The correlator includes structure for comparing a cell's gray level data with the average gray level of a preselected number of surrounding cells. Structure is also provided for automatically selecting the number of surrounding cells for determining the average gray level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.