Digital camera and method
US8385671B1 · kind B1 · utility
5Cited by
6References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2007 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Apr 20, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20192
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Image noise reduction filtering by low-pass/high-pass filtering to get a hierarchical representation, modifying coefficients in each hierarchy level for noise suppression, and the modified level combination to yield a noise-filtered image. The noise suppression within levels preserves edges which the representation preserves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.