Image processing based on degree of white-background likeliness
US7221799B2 · kind B2 · utility
3Cited by
22References
3Claims
0Family size
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Key dates
| Filing date | Nov 16, 2005 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Nov 16, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30176
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing device includes a filtering unit which filters an input image with variable frequency characteristics, an edge detection unit which detects magnitudes of edges appearing in the input image, and a degree-of-white-background-likeliness detection unit which detects degrees of white-background likeliness in respect of local areas of the input image, wherein the filtering unit changes the variable frequency characteristics in response to the magnitudes of edges and to the degrees of white-background likeliness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.