Apparatus and method for filtering digital image signal
US7538822B2 · kind B2 · utility
21Cited by
9References
18Claims
0Family size
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Key dates
| Filing date | Feb 1, 2005 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Apr 27, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20182
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method of filtering a digital image signal. The apparatus includes: a noise reduction filter which selectively outputs one of results obtained by temporally and spatially filtering pixel values of pixels of each of frames of an image as a temporal or spatial filtering value in response to magnitudes of the results of temporal and spatial filtering; and a sharpness enhancement filter which highlights and outputs a high pass component of the temporal or spatial filtering value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.