Verfahren und Vorrichtung zur Bewegtbildkodierung

摘要

The present invention relating to a method of video coding associated with processing accumulated errors and a encoder therefor, the method comprising the steps of: (a) generating motion vectors of an input image in a predetermined unit and the difference image between an image of filtering a motion-compensated image on a reconstructed previous frame and the input image on current frame, and then performing discrete cosine transform (DCT), quantization and variable length coding on the difference image; (b) generating the motion-compensated image on the reconstructed previous frame from the reconstructed previous frame and the motion vectors; and (c) filtering off accumulated errors while preserving the edges within the motion-compensated image on the reconstructed previous frame. Therefore, random distributed noises due to accumulated errors can be removed and bit generation amounts by filtering off random accumulated errors with a high frequency characteristics before coding can be reduced.