Image processing based on degree of white-background likeliness
US6987886B1 · kind B1 · utility
13Cited by
18References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 15, 2000 |
| Grant date | Jan 17, 2006 |
| Priority date | — |
| Expiry date | Sep 11, 2022 |
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.