Image interpolation using optimized color transforms

In many demosaicing algorithms the red and the blue colors are reconstructed based on the interpolated green. Although additional information such as the statistics of the color components could be easily obtained, these algorithms are not optimized according to the available data. In this work we propose optimized color transforms for the reconstruction of the red and blue colors, based on properties of the input image. When comparing the results of the optimized algorithms to existing known techniques, we show improvement in the reconstructed images both visually and according to the SCIELAB quality measure. Based on extensive simulation results, we show and conclude that the proposed optimization techniques could be useful and instrumental in digital photography.