梳状滤波器(to be continued)
2010-01-05 17:41
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梳状滤波器是由许多按一定频率间隔相同排列的通带和阻带,只让某些特定频率范围的信号通过,由于其特性曲线象梳子一样,故称为梳状滤波器。梳状滤波器被用于分离色度信号的两个正交分量U色差信号与V色差信号,一般由延时、加法器、减法器、带通滤波器组成。对于静止图像,梳状滤波在帧间进行,即三维梳状滤波或3D梳状滤波器。对活动图像,梳状滤波在帧内进行,即二维梳状滤波或2D梳状滤波器。
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