Binarization processing method for multivalued image and method to form density pattern for reproducing binary gradations
US5259042A · kind A · utility
12Cited by
5References
15Claims
0Family size
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Key dates
| Filing date | Nov 20, 1990 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Nov 20, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/28
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A high quality binary valued image is reproduced from a multivalued original image by a combination of density pattern processing and error diffusion processing using density patterns prepared previously in correspondence to each density value of pixels of an image to be reproduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.