Method of correcting digital image distortion caused by a sheet-fed scanner
US8195003B2 · kind B2 · utility
1Cited by
5References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2008 |
| Grant date | Jun 5, 2012 |
| Priority date | — |
| Expiry date | Apr 6, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30176
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A novel and useful method of processing digital images to correct distortion caused by a sheet-fed scanner. The method of the present invention derives a model which estimates the distortion. Match points are detected in the digital image and compared to match points of pre-defined templates. Treating the relative locations of the detected match points as polar coordinates (as opposed to Cartesian coordinates) enables a model to be derived to correct the distortion. In the event that there are multiple distortions to the digital image the digital image is partitioned into segments, with a separate model derived for each segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.