Methods and apparatus for removing compression artifacts in video sequences

摘要: Techniques for removing ringing artifacts from video data. A deringing filter in accordance with the present invention preserves real image edges a frame, while smoothing out interiors of objects. In one aspect, 9-tap low-pass is applied to an adaptive processing window. The window initialized values 3×3 mask centered on position whose output computed. Then all that are very different central replaced value. varies between and identity, depending how much value differs its surrounding ones. deblocking may also be suitably used conjunction filter.