Method for adjusting brightness of image
US8351778B2 · kind B2 · utility
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2References
7Claims
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Key dates
| Filing date | Jul 27, 2011 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Aug 28, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2215/05
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for adjusting brightness of an image, suitable for an image capturing apparatus with a flash lamp, is provided. In the method, an intensity of a main flash of the flash lamp is raised, and a sensitivity is reduced. When the main flash is fired by the flash lamp, a raw image is captured according to the reduced sensitivity for calculating a brightness mean value. A gain ratio is calculated according to the brightness mean value and a brightness target, so as to use the gain ratio to compensate the brightness of the raw image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.