Autodiscrimination and line drawing techniques for code readers
US6405925B2 · kind B2 · utility
78Cited by
20References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 16, 2001 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Mar 16, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/14
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Optical image readers have a two-dimensional image sensor and an auto-discrimination function. The auto-discrimination function identifies optical codes by type for pixel clusters and, in some cases, tilt angle and start/stop coordinates. The clustered pixel data is passed to an appropriate decoder identified by the auto-discrimination function based upon a likelihood that the cluster contains an optical code of a particular type. Line drawing technique provide for adequate sampling of the clustered pixel data code based on the tilt angle of the code relative to an image sensor array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.