Decoding machine-readable code
US8881986B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2013 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Mar 11, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/1465
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Various algorithms are presented that enable an image of a machine-readable code, captured by a camera of an electronic device, to be decoded on the device without need to upload the image information to a server for processing. The algorithms can account for variations in focus of the image, as may result in blur due to move movement or auto-focus features. The approaches can handle multiple machine-readable code formats, and can handle machine-readable code on curved surfaces, machine-readable code with damaged areas, or machine-readable code that are otherwise uneven. Such algorithms are highly accurate while being fast and lightweight enough to execute on portable electronic devices, such as tablet computers and smart phones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.