Generalized adaptive spatio-temporal auto-regressive model for video sequence restoration

A generalized auto-regressive (AR) model is proposed for linear prediction based on adaptive spatio-temporal support region (ASTSR). The conventional AR model has the drawback that the prediction error increases in the edge region because the rectangular support region of the edge does not satisfy the stationary assumption, Thus the proposed approach puts an emphasis on the foundation of an adaptive spatio-temporal support region for the AR model, called ASTSR. The ASTSR consists of two pairs: 1) An adaptive spatial support region (ASSR) composed of pixels that are highly correlated with the current predicted pixel. 2) An adaptive temporal support region (ATSR) formed based on the existence of motion. The proposed AR model not only produces more accurate model parameters but also reduces the computational complexity in the motion picture restoration.