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A Fast Algorithm for the Demosaicing Problem Concerning the Bayer Pattern


 
 In this paper, we deal with the demosaicing problem when the Bayer pattern is used. We propose a fast heuristic algorithm, consisting of three parts.
 
 
 
 In the first one, we initialize the green channel by means of an edge-directed and weighted average technique. In the second part, the red and blue channels are updated, thanks to an equality constraint on the second derivatives. The third part consists of a constant-hue-based interpolation.
 
 
 
 We show experimentally how the proposed algorithm gives in mean better reconstructions than more computationally expensive algorithms.
