Handwritten character recognition based on frequency variations in characters
US8494278B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2013 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | Jan 4, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/2268
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and computer program product for recognizing handwriting. A handwritten character is captured as an image of black pixels and white pixels. The image is partitioned into segments, each of which having a pixel ratio of a total number of black pixels in the segment to a total number of black pixels in the image. A reference character has segments corresponding to the image segments. Each reference character segment has a value range of a pixel ratio of a total number of black pixels in the segment of the reference character to a total number of black pixels in the reference character. It is ascertained that the pixel ratio of more than a predetermined number of segments in the image are within the value range of the pixel ratio of the corresponding segments of the reference character, from which, the handwritten character is recognized as the reference character.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.