METHOD AND APPARATUS FOR ENCODING/DECODING VIDEO SIGNAL USING TEMPORAL AND SPATIAL CORRELATIONS BETWEEN MACRO BLOCKS

摘要

A method and a device for encoding/decoding video signals by motion compensated temporal filtering. Blocks of a video frame are encoded/decoded using temporal and spatial correlations according to a scalable Motion Compensated Temporal Filtering (MCTF) scheme. When a video signal is encoded using a scalable MCTF scheme, a reference block of an image block in a frame in a video frame sequence constituting the video signal is searched for in temporally adjacent frames. If a reference block is found, an image difference (pixel-to-pixel difference) of the image block from the reference block is obtained, and the obtained image difference is added to the reference block. If no reference block is found, pixel difference values of the image block are obtained based on at least one pixel adjacent to the image block in the same frame. Thus, the encoding procedure uses the spatial correlation between image blocks, improving the coding efficiency.