Image encoding apparatus
US5124811A · kind A · utility
30Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1989 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Aug 25, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4172
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image encoding apparatus includes a smoothing circuit for smoothing a binary image to be encoded, a binary-encoding circuit for binary-encoding the image smoothed by the smoothing circuit, a sampling circuit for sub-sampling the image binary-encoded by the binary-encoding circuit, and an encoding circuit for encoding the binary image sub-sampled by the sampling circuit. A degree of smoothness of an image by the smoothing circuit and a threshold value for a binary-encoding operation of the binary-encoding circuit can be varied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.