Symbol detector, image processing device, and symbol detecting method
US10157302B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 14, 2016 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | Nov 14, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2019/06225
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A symbol detector includes a binarization processor configured to read a symbol image in a uniaxial direction and output a first pixel value or a second pixel value obtained by binarization of a pixel value of each pixel of the symbol image, a calculator configured to calculate a second ratio of a first consecutive value and a second consecutive value obtained before and after the first consecutive value in a case where the first consecutive value and the second consecutive value are switched alternately, and a transmitter configured to output the symbol image in a case where a difference between the calculated second ratio and the first ratio is equal to or lower than a predetermined value, and stop outputting the symbol image in a case where the difference is higher than the predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.