Demosaicking Algorithm Based on Accurate Edge-directed Interpolation

In this paper, we proposed a new demosaicking algorithm for imaging system based on accurate edge detection. Different from the conventional demosaicking method, the proposed method has two steps: first, using thresholding method, the geometric distribution of the local region is investigated to detect the interpolation direction; second, different interpolation methods are adopted to recover the missing color components according to the local region statistics; As compared with the latest demosaicking methods, experiments showed that the proposed algorithm provided outstanding performance in terms of both objective and subjective image qualities.