Document skew accommodation
US7133573B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2002 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | May 10, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0436
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method to be used within a document image capture device, such as a document scanner (10) of detecting and measuring the document skew (25) while the document is still entering the imaging area and then effecting a rotation of the camera to accommodate the document skew so that the resulting image taken is not skewed. This can be accomplished by one of several methods, such as rotating the entire camera, rotating only the sensor element, or rotating another element in the optical path such as a prism. Use of the methods incorporated in this invention does not require the document motion to be stopped to measure and accommodate skew or to take the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.