Arrangements for enhancing digital watermark decoding
US10735623B2 · kind B2 · utility
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3References
24Claims
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Key dates
| Filing date | Jan 14, 2019 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Jan 14, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20208
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Imagery captured by a point-of-sale scanner (e.g., in a supermarket) for purposes of barcode decoding, is contrast-enhanced preparatory to use for watermark decoding—despite the fact that such operation may sometimes result in contrast between certain pixels being diminished. A great variety of other features and arrangements are also detailed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.