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    • 8. 发明授权
    • Image processing apparatus, image processing method, and image capturing apparatus
    • 图像处理装置,图像处理方法和图像捕获装置
    • US08421880B2
    • 2013-04-16
    • US13103401
    • 2011-05-09
    • Hiroyoshi SekiguchiRyosuke Kasahara
    • Hiroyoshi SekiguchiRyosuke Kasahara
    • H04N9/73
    • H04N5/2357
    • An image processing apparatus includes: a difference calculation unit that calculates a difference value of a feature amount of image data of a predetermined region between a present frame and a past frame; a first counting unit that counts number of times when an absolute value of the difference value exceeds a threshold during a predetermined period of time; a second counting unit that counts number of times when the difference value of the image data have different plus-minus signs between a present frame and a past frame during a predetermined period of time; and an identification unit that identifies a light source frequency by comparing the output of the second counting unit with a predetermined value when the output of the first counting unit exceeds a predetermined value.
    • 一种图像处理装置,包括:差分计算单元,计算当前帧和过去帧之间的预定区域的图像数据的特征量的差值; 第一计数单元,其计算在预定时间段期间所述差值的绝对值超过阈值的次数; 第二计数单元,其计算在预定时间段期间图像数据的差值在当前帧和过去帧之间具有不同正负号的次数; 以及识别单元,当第一计数单元的输出超过预定值时,通过将第二计数单元的输出与预定值进行比较来识别光源频率。