DYNAMIC IMAGE ENCODING SYSTEM AND DYNAMIC IMAGE DECODING SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an encoding system/capable of improving the encoding efficiency of shape data at the time of encoding a dynamic image object, and to provide a decoding system. SOLUTION: A frame shape movement detection part 24 and a frame shape movement compensation part 26 collect two fields becoming a group and compensate and predict movement on shape data 2. Then, a field shape movement detection part 28 and a field shape movement compensation part 30 independently compensate/predict data at every field. Respective predicted shape data are encoded by an arithmetic encoding part 32 and data of short code word length is selected by a shape encoding mode selection part 34.