Patent · US Active

2-D barcode recognition

US7780084B2 · kind B2 · utility

98Cited by

9References

20Claims

0Family size

Assignee

Microsoft Corporation · US

Inventors

Chunhui Zhang · Bissenkamp, SE
Zhouchen Lin · Beijing, CN
Zhengyou Zhang · Redmond, US
Shi Han · Beijing, CN

Key dates

Filing date	Jun 29, 2007
Grant date	Aug 24, 2010
Priority date	—
Expiry date	Jan 5, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/20061
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Systems and methods for 2-D barcode recognition are described. In one aspect, the systems and methods use a charge coupled camera capturing device to capture a digital image of a 3-D scene. The systems and methods evaluate the digital image to localize and segment a 2-D barcode from the digital image of the 3-D scene. The 2-D barcode is rectified to remove non-uniform lighting and correct any perspective distortion. The rectified 2-D barcode is divided into multiple uniform cells to generate a 2-D matrix array of symbols. A barcode processing application evaluates the 2-D matrix array of symbols to present data to the user.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.