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This paper addresses filter design for the adaptive frequency-domain Bayer demosaicking algorithm. Both frequency-domain design and a least-squares design are considered. The effect of filter order on the reconstruction error is studied. A least-squares design method taking into account the characteristics of the adaptive frequency-domain algorithm is shown to lead to better demosaicking results than other published methods with lower complexity than the previous version of the adaptive frequency-domain algorithm.
Éric Dubois (Sun,) studied this question.
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