Advanced demosaicing methods based on the changes of colors in a local region

A large number of demosaicing methods using a directional or adaptive color correlation have been suggested. In such conventional methods, however, there is the problem of artifacts occurring on the edges of color boundaries. In the advanced demosaicing method we propose, demosaicing is carried out on the basis of the results obtained from the analysis of the changes of color signals in a local region. Using image simulation, we confirmed the artifact noise generated in the conventional method had been reduced by the advanced demosaicing method.