Methods and systems for slant compensation in handwriting and signature recognition
US7620244B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 6, 2004 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Nov 1, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/382
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Various computer-implemented methods are provided. One method for signature recognition includes identifying a vertical element of a signature and determining a tilt angle of the vertical element. Tilt angle is defined by a line that is approximately parallel to the vertical element. In addition, the method includes determining a tilt factor. Tilt factor is defined as a horizontal offset between the tilt angle and a reference tilt as a function of distance from a signature baseline. The method further includes altering the signature using the tilt factor and comparing the altered signature to known signature(s) to determine if the altered signature matches one of the known signature(s). Another method includes altering the signature using a predetermined tilt factor and comparing the altered signature to known signature(s). If the altered signature does not match one of the known signature(s), these steps may be repeated with different predetermined tilt factors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.