Image brightness correction method

Details Image brightness correction method Image brightness correction method

2008-12-05

2011-11-08

Chan, Jason (Department: 2622)

Television

Camera, system and detail

Optics

C348S229100, C348S371000, C348S221100, C348S223100, C382S274000, C382S167000

Reexamination Certificate

active

08054374

ABSTRACT:
An image brightness correction method is described. First, a pre-flash is fired and a pre-flash image is shot. After a main flash duration is estimated according to the pre-flash image and an automatic exposure time of a camera device, a main flash is fired and a raw image is shot. Then, a brightness gain of the raw image is compensated according to a preset gain threshold, and a digital brightness gain of the image is adjusted to enable the image shot each time to achieve the same brightness gain.

REFERENCES:
patent: 2002/0150306 (2002-10-01), Baron
patent: 2007/0189752 (2007-08-01), Kobayashi
patent: 2008/0252749 (2008-10-01), Fujiwara

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