White balance adjusting apparatus for automatically...

Details White balance adjusting apparatus for automatically... White balance adjusting apparatus for automatically...

H - Electricity

04

N

350/42

H04N 9/04 (2006.01) H04N 9/73 (2006.01)

Patent

CA 2030144

64 regions are set on an image sensed picture of a video camera, where each evaluating values rij, bij, and yij are obtained by averaging color difference signals R-Y and B-Y and luminance signal Y obtained from an image sensed signal over 1 field period for each region. When determination is made that luminance evaluating value yij out of these evaluating values exceeds a predetermined value, the color evaluating values of the corresponding region are attenuated by a predetermined amount, in producing gain control signals regarding color difference signals. As a result, the effect of an object of high luminance towards white balance adjustment is reduced.

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