Bildkodierungs-/-dekodierungsvorrichtung

摘要

A video coding/decoding apparatus comprises a prediction circuit (1) that divides an input video signal into large regions and small regions in a hierarchical fashion and produces a prediction signal by performing prediction region by region, a subtracter (2) for generating a prediction error signal for a prediction signal at the lowest level, a DCT circuit (17) for coding a prediction error signal, a quantization circuit (19) and a variable-length encoder (21), a variable-length encoder (4) for coding the prediction mode and motion vector information obtained at each level from the prediction circuit, and a multiplexer (30) for multiplexing the code strings obtained from the variable-length encoder and dividing them into the upper-layer and lower-layer code strings to output the code strings obtained at the variable-length encoder particularly as upper-layer code strings. <IMAGE>