Block decoding method and system for two-dimensional code
US10095903B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2018 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Jan 15, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/06037
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A block decoding method includes: storing a received two-dimensional code image in an image data backup register; binarizing the received two-dimensional code image; searching for a boundary line of the two-dimensional code image; segmenting each of the regions into bit regions each of which corresponds to one bit data; re-acquiring the received two-dimensional code image stored in the image data backup register; calculating an average gray-scale value of all the pixels in the bit region as a gray-scale value of the bit region; calculating a gray-scale threshold of each of the bit regions n using the Otsu method; binarizing the bit region so as to obtain a binarized two-dimensional code image; and decoding the binarized two-dimensional code image. A system for a two-dimensional code is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.