Automatic white balance for digital imaging

Details Automatic white balance for digital imaging Automatic white balance for digital imaging

2006-02-07

2006-02-07

Vu, Ngoc-Yen (Department: 2612)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S229100, C348S254000, C348S255000, C382S167000, C382S168000, C358S516000, C358S520000, C358S522000

Reexamination Certificate

active

06995791

ABSTRACT:
In performing automatic white balance of a digital image, a signal is obtained from an image sensor, which represents data corresponding to an image. A plurality of channels is obtained from the signal. A mean value for each of the plurality of channels is determined using a histogram. An average dynamic range is determined from the signal using a histogram. A difference or ratio between one or more of the mean values and the average dynamic range is determined, and that difference or ratio defines a white balance correction. The white balance of the image is then adjusted using the white balance correction.

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