Automatic adaptive image sharpening
US8730329B2 · kind B2 · utility
4Cited by
5References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2011 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Jul 11, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N17/002
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This disclosure describes techniques for initially calibrating an image capture device. According to one aspect, the calibration includes calibrating parameters of an image filter for resolving the captured image. The method includes receiving a captured image of a test target and resolving the captured image using a set of initial parameters. A sharpness index of the resolved image is determined without matching the captured image to the test target. The sharpness index is used to minimize a cost function for determining parameters for use by the image capture device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.