Sharpness enhancing apparatus and method
US8331719B2 · kind B2 · utility
1Cited by
2References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 13, 2009 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Jun 16, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/142
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sharpness enhancing apparatus include: an edge analyzing unit configured to receive image data separated into brightness signals and color signals, and analyze an edge state by using brightness signals and color signals of cells contained in a specific area; and a sharpness correcting unit configured to calculate a sharpness correction amount by performing a mask operation on a sharpen mask, which is set according to the edge state, and the brightness signals of the cells, sum the calculated sharpness correction amount and the brightness signals of the cells, and correct sharpness of the brightness signals of the cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.