Image processing apparatus for processing a bi-level image and method therefor
US6154568A · kind A · utility
5Cited by
10References
9Claims
0Family size
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Key dates
| Filing date | Jun 2, 1997 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Jun 2, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4105
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A bi-level image is pre-processed by dividing the image into rectangular blocks, and rearranging the dots in each rectangular block into a pattern determined by the density of black dots in the block. The resulting rearranged image is suitable for further processing such as resolution conversion or compressive encoding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.