Camera device which calculates brightness level ratios to...

Details Camera device which calculates brightness level ratios to... Camera device which calculates brightness level ratios to...

2005-04-12

2005-04-12

Moe, Aung (Department: 2612)

Television

Camera, system and detail

Optics

C348S363000

Reexamination Certificate

active

06879345

ABSTRACT:
A camera device in which the location of a dark distribution is determined, and a dark distribution histogram ratio is calculated. The location of a bright distribution is determined, and a high-brightness slice set value is set. A determination is made as to whether or not a subject is in a backlighted state. The subject is determined to be in a backlighted state when a dark_ratio falls within a particular range. When the subject is not in a backlighted state, the high-brightness slice set value is used unchanged. On the other hand, when the subject is in a backlighted state, the dark_ratio is normalized so that, for example, backlight correction is carried out so that a high-brightness component limiter value of an integration signal of a peak-value-detected output is decreased.

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patent: 62110369 (1987-05-01), None
patent: 02268080 (1990-11-01), None

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