System and method for decoding barcodes not easily perceptible by human vision
US8584953B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 18, 2011 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Nov 18, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/1478
- 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 and a substantially low chromacity deviation such that the barcode could not be easily perceptible and 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.