Artifact removal technique for skew corrected images
US6282326A · kind A · utility
55Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1998 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Dec 14, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4097
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital image processing method and system is adapted to remove diagonally disposed artifacts such as lines, dots, dashes etc., from a scanned skew corrected document or image. The system and method converts a captured skew corrected image into first and second binary images and generates a map indicative of a difference between the first and second binary images. Black pixels in the map are projected based on a skew angle of the image to form a projection profile, and an image based on the map, detected peaks in the projection profile and the pixels is created.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.