ENCODING AND DECODING METHOD AND APPARATUS BY USING BLOCK DPCM

摘要

A method and apparatus are disclosed for performing coding and decoding of a still image or an active image which is coded by intra frame coding. The coding system estimates the displacement of a most similar pattern block with present block data for coding from coded frame data, transmits a displacement vector, codes the data with lower energy level between present block data and differential data, and transmits it to a decoder. The decoding system decodes the transmitted data using displacement compensation according to the transmitted displacement vector, and thus outputs the decoded still image. As a result, the coding/decoding system can compress the transmitting data more than a conventional system for coding and decoding a still image. <IMAGE> <IMAGE>