Method and device for determining skew angle of an image
US7356200B2 · kind B2 · utility
7Cited by
17References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 2003 |
| Grant date | Apr 8, 2008 |
| Priority date | — |
| Expiry date | Nov 22, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/242
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatuses for determining a skew angle of text relative to an axis are disclosed herein. One exemplary embodiment of the method comprises locating a first portion of the text that has a spatial frequency greater than a first preselected value. The method continues with locating a second portion of the text that has a spatial frequency greater than a second preselected value. A line is fitted between the first portion of the text and the second portion of the text. The angle between the line and the axis is measured, wherein the angle corresponding to the skew angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.