Image demosaicking using polyphase decomposition

Image demosaicking using polyphase decomposition

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Most digital still cameras acquire imagery with a Color Filter array (CFA), sampling only one color value for each pixel and interpolating the other two color values afterwards. The interpolation process is commonly known as demosaicking. In general, a good demosaicking method should preserve the high-frequency information of the imagery as much as possible, since such information is essential for image visual quality. The two observations that are important for Color Filter Array (CFA) demosaicking are: 1) there is a high correlation between the red, green and blue channels and 2) the green c...