Effective color interpolation in CCD color filter array using signal correlation

We propose an effective color filter array interpolation method for digital still cameras using a simple image model that correlates the R, G, B channels. The main contribution of this paper is that we propose a low complexity interpolation method to improve the image quality. Simulation results verify that the proposed method obtain superior image quality. The G channel of the proposed method outperforms the bilinear method by 6.34 dB, and the R, B channels have a 7.69 dB improvement in average. Furthermore, the complexity of the proposed method is acceptable compared with the existing methods