A Design Framework of Digital Camera Images Using Edge Adaptive and Directionally Weighted Color Interpolation Algorithm

Color interpolation or demosaicing is a process by which a raw image generated by digital still cameras with the help of color filter array (CFA) are converted to a full color image by estimating the missing color components of each pixel from its neighbors. An edge adaptive and directional weighted color interpolation scheme is hence proposed in this paper. Directional interpolation with finer edge orientations and corresponding weight adjustments are utilized to suppress undesirable artifacts around line edges. Empirical and visual results demonstrate that the proposed method effectively produces a full color image from the CFA with minimum noise.