Demosaicing algorithm using high-order interpolation with sobel operators

Abstract

To decrease price and size, most digital cameras use single sensor array. Single sensor array acquires only one of three colors at each pixel. Therefore, the missing two color values should be estimated to acquire full color image. To interpolate missing pixels, many demosaicing algorithms have been proposed. In this paper, we proposed improved method based on high-order interpolation. The calculation of gradients is achieved by Sobel operator. As compared with the latest demosaicing algorithms, the proposed algorithm produces the best average CPSNR and subjective quality.