Detecting bar code candidates
US6386454B2 · kind B2 · utility
45Cited by
23References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2001 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Feb 26, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/1456
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An area of interest is scanned to produce pixels of the scanned area. The pixels are divided into a plurality of blocks. For each block, an orientation of a spanning line or a lack of orientation is determined. Contiguous ones of the blocks are clustered, when their orientation is within a certain tolerance level. Each cluster has a length and a width. The length is longer than the width. If the orientation of a cluster's block is perpendicular to the length of that cluster, that cluster is selected as a bar code candidate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.