Two-dimensional code recognition processing method, two-dimensional code recognition processing apparatus, and storage medium
US7142714B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2003 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Jun 20, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/06131
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A two-dimensional code recognition processing method for recognizing a two-dimensional code lade of a plurality of square cells arranged in accordance with predetermined layout rules. The method comprises the steps of: generating binary data from image information acquired externally in accordance with a predetermined threshold value; detecting a reference cell serving as a reference in recognizing the two-dimensional code based on the binary data generated in the binary data generating step; detecting corner cells each located in a predetermined search range with respect to the reference cell detected in the reference cell detecting step, on the basis of the binary data generated in the binary data generating step; and detecting code data assigned to the two-dimensional code existing inside an area of a code part enclosed by the reference cell and by the corner cells on the basis of the binary data generated in the binary data generating step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.