document: Color plane interpolation using alternating projections Most commercial digital cameras use color filter arrays to sample red , green , and blue colors according to a specific pattern . At the location of each pixel only one color sample is taken , and the values of the other colors must be interpolated using neighboring samples . This color plane interpolation is known as demosaicing ; it is one of the important tasks in a digital camera pipeline . If demosaicing is not performed appropriately , images suffer from highly visible color artifacts . In this paper we present a new demosaicing technique that uses inter-channel correlation effectively in an alternating-projections scheme . We have compared this technique with six state-of-the-art demosaicing techniques , and it outperforms all of them , both visually and in terms of mean square error
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