发明名称 White balance adjusting apparatus for automatically adjusting white balance in response to a color information signal obtained from an image sensing device
摘要 Sixty-four regions are established on an image sensed picture from a video camera, where evaluating value rij, bij, and yij is obtained by averaging color difference signals R-Y and B-Y and luminance signal Y obtained from an image sensing signal for over 1 field period for each region. When the apparatus determines that the difference in the evaluating values between two adjacent regions do not exceed a predetermined value, that is, when that continuing regions have the same color, the weighing amount of the color evaluating values of a corresponding region is adjusted to limit its effect upon the gain control signals used to adjust the gain of the color signal amplifiers. As a result, the effect of objects of the same color towards white balance adjustment is reduced.
申请公布号 US5489939(A) 申请公布日期 1996.02.06
申请号 US19940360987 申请日期 1994.12.20
申请人 SANYO ELECTRIC CO., LTD. 发明人 HARUKI, TOSHINOBU;KIKUCHI, KENICHI
分类号 H04N9/73;(IPC1-7):H04N9/64 主分类号 H04N9/73
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