Barcode detection method and barcode detection system for increasing detection efficiency
US10872257B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2020 |
| Grant date | Dec 22, 2020 |
| Priority date | — |
| Expiry date | Mar 31, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/2247
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A barcode detection method includes obtaining a gradient of each pixel in an image, generating a gradient phase and a gradient magnitude of each pixel according to the gradient, and binarizing the gradient magnitude of each pixel to generate a binary image, generating a sliding window on the image, sampling the binary image vertically and horizontally within the sliding window to generate the numbers of grayscale value variations in the vertical and horizontal directions, locating the most intensive flip region according to the grayscale variations in the vertical and horizontal directions, locating a core barcode region according to the most intensive flip region, capturing the gradient phase of the pixels in the core barcode region to generate a gradient phase distribution, generating a barcode format detection result according to the gradient phase distribution, and locating the barcode region according to the barcode format detection result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.