Stochastic halftone screening method
US7277204B2 · kind B2 · utility
5Cited by
4References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 31, 2003 |
| Grant date | Oct 2, 2007 |
| Priority date | — |
| Expiry date | Feb 21, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4051
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of building threshold matrices for stochastic screening by using the actual size and shape of imaged pixel and/or pixel agglomerate instead of the nominal one, in the stage of calculating appropriate threshold matrices. For each relevant combination of imager and imaged media, a matrix with desirable blue-noise-like characteristics is created from actual imaged pixels and/or pixel agglomerates, taking into account their overlap when placed in close proximity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.