Method of spatially filtering digital image for noise removal, noise estimation or digital image enhancement
US6931160B2 · kind B2 · utility
16Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2001 |
| Grant date | Aug 16, 2005 |
| Priority date | — |
| Expiry date | Aug 11, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of spatially filtering a digital image includes receiving a source digital image including pixels corresponding to one or more different colors; selecting a pixel of interest in the source digital image; calculating two or more noise free pixel estimates for the pixel of interest using pixel values sampled in a local region about the pixel of interest; selecting a final noise free pixel estimate for the pixel of interest from the noise free pixel estimates; and repeating for other pixels in the source digital image to provide a spatially filtered digital image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.