Automatic exposure adjusting apparatus for automatically...

Details Automatic exposure adjusting apparatus for automatically... Automatic exposure adjusting apparatus for automatically...

H - Electricity

04

N

352/18

H04N 9/79 (2006.01) H04N 5/235 (2006.01) H04N 5/91 (2006.01)

Patent

CA 2019943

An automatic exposure adjusting apparatus for use in a video camera automatically adjusts exposure based on a video signal obtained from an image sensing circuit. The automatic exposure adjusting apparatus detects a luminance signal level of the video signal and detects a first mean value which is a simple mean value per unit area of an image sensed picture. The automatic exposure adjusting apparatus also outputs a second mean value weighted every area in accordance with a luminance distribution in the image sensed picture. The automatic exposure adjusting apparatus controls the adjustment of exposure based on the first and second mean values. Such weighting of the luminance level in accordance with the luminance distribution is carried out based on the fussy inference.

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