VIDEO ENCODING/DECODING METHOD AND APPARATUS BASED ON ADAPTIVE SECOND PREDICTION, AND RECORDING MEDIUM THEREFOR

摘要

PURPOSE: An adaptive second prediction based image encoder is provided to improve an image quality by minimizing a residual signal value. CONSTITUTION: A prediction unit(120) creates a motion compensation block and a motion vector. A first residual block generator(230) creates a first residual block. An adaptive conversion and quantization unit(240) creates a first quantization block. A second residual block generator(250) creates the second quantization block. An encoding unit(260) selectively encodes the second prediction information.