Method and apparatus for creating pixel tokens from machine-readable symbols to improve decoding accuracy in low resolution images
US8162223B2 · kind B2 · utility
0Cited by
5References
18Claims
0Family size
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Key dates
| Filing date | Mar 8, 2010 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Oct 13, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/14
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention is directed towards systems and methods for decoding a bar code. Decoding the bar code includes segmenting the bar code into black tokens, white tokens and gray boundary pixels. Decoding the bar code also includes calculating a boundary position of each token with sub-pixel positional accuracy using intensity values of pixels in a boundary region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.