Digital image sharpening method using SVD block transform
US4945502A · kind A · utility
31Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1988 |
| Grant date | Jul 31, 1990 |
| Priority date | — |
| Expiry date | Dec 27, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20192
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A block transform image sharpening method employs singular value decomposition to boost texture and edge detail while not boosting shaded (uniform) areas of the image characterized by a lower signal-to-noise ratio while at the same time reducing noise in other areas of the same image not containing much edge detail or texture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.