Image capturing device and brightness correcting method thereof

Details Image capturing device and brightness correcting method thereof Image capturing device and brightness correcting method thereof

2008-09-01

2010-11-30

Ho, Tuan (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

Reexamination Certificate

active

07843500

ABSTRACT:
An image capturing device includes a capturing module, a numerical transform module, a brightness measuring module, and a processing module. The capturing module includes a lens unit and an image sensor. The lens unit forms an optical image onto the image sensor. The image sensor includes an effective pixel region and an optical black pixel region. The effective pixel region is configured for generating electrical image signals roughly corresponding to the optical image. The optical black pixel region is configured for generating dark currents corresponding to the electrical image signals. The numerical transform module is configured for transforming the dark currents into a first brightness value matrix. The brightness measuring module is configured for measuring a brightness component of the electrical image signals as a second brightness value matrix. The processing module is configured for subtracting the first brightness value matrix from the second brightness value matrix to obtain a corrected brightness component corresponding to the optical image.

REFERENCES:
patent: 2001/0045829 (2001-11-01), Prammer et al.
patent: 2002/0012053 (2002-01-01), Yoshida
patent: 2006/0274173 (2006-12-01), Yoshida et al.
patent: 2006123828 (2006-11-01), None

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