LOOP FILTERING METHOD FOR REDUCING BLOCKING EFFECT AND RINGING NOISE OF MOTION COMPENSATED IMAGE

摘要

The signal adaptive loop filter reduces the blocking effects and ringing noise of the compensating image data. In the loop filter, the binary edge map information reflecting global thresholding and local thresholding of the compensated image is divided into homogeneous area and homogeneous area in the filter window of a predetermined size. It is used to determine which of the edge areas. If determined to be a homogeneous region, the first predetermined weight values corresponding thereto are used to generate a filtered pixel value corresponding to the corresponding filter window. If determined to be an edge region, the predetermined second weight values vary according to the binary edge map information corresponding to the pixel, and a filter window having the variable second weight values is used to generate the filtered pixel value corresponding to the respective pixel. .