System and method for decoding barcodes captured with a color image sensor
US8079525B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 2011 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | Feb 24, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10841
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computing device and method for reading a barcode captured with a color image sensor is disclosed. The barcode can have features and background that have equal brightness such that the barcode could not be decoded with known greyscale decoding techniques. The method for reading the barcode includes receiving color image values for each pixel of a captured image of a target barcode from a color image sensor, determining chrominance values for each pixel from the color image values, detecting edges based on the chrominance values to generate an edge-detected image that is provided to a greyscale barcode decoder to decode the information in the target barcode. The chrominance values can be based on the blue and red difference components from the YUV image format, and the U and V values can be combined using color temperature information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.