发明名称 White balance control image sensing apparatus and method
摘要 It is an object of this invention to reduce image sensing errors due to wrong white balance control using wrong color temperature information in an image sensing device capable of performing white balance control using a color image signal from an image sensing device. In order to attain the above object, when the color in the vicinity of the locus of a blackbody cannot be extracted in detection of a color temperature in a color image signal, color temperature information is corrected on the basis of a piece of color temperature information output from a calorimetric sensor, thereby controlling the white balance of a color image signal output from an image sensing element. The number of achromatic data extracted from the color image signal is counted. The color temperature is calculated by weighting a color temperature obtained from the color image signal and that obtained from the calorimetric sensor in accordance with the count, thereby performing white balance control.
申请公布号 US8159556(B2) 申请公布日期 2012.04.17
申请号 US20080116723 申请日期 2008.05.07
申请人 MAEDA KOJI;CANON KABUSHIKI KAISHA 发明人 MAEDA KOJI
分类号 H04N9/04;H04N9/73;G06K9/00;H04N5/228;H04N5/77;H04N5/781;H04N5/907 主分类号 H04N9/04
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