Device and method for performing optical character recognition
US10133948B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jul 9, 2015 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Jul 9, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of performing character isolation in an optical character recognition process, the method comprising receiving image data representing one or more character columns, determining a number of black pixels in each column of the image data, defining a vertical separation threshold which is a maximum number of black pixels in a column, dividing the columns into different pixel groups and groups of excluded columns by excluding any columns with a number of black pixels below the vertical separation threshold, identifying the pixel group representing the left most character column in the image data, determining whether there are one or two pixel groups representing character columns in the image data and, if it is determined that there are two pixel groups representing character columns, using a predetermined width value for a right most character column in order to identify a right hand boundary of the right most character column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.