MOTION VECTOR PREDICTIVE ENCODING METHOD, MOTION VECTOR PREDICTIVE DECODING METHOD, MOVING PICTURE ENCODING APPARATUS, MOVING PICTURE DECODING APPARATUS, AND PROGRAMMES THEREOF

摘要

FIELD: physics, computer engineering.SUBSTANCE: invention relates to computer engineering. A motion vector predictive encoding method in a moving picture encoding scheme involves performing a motion search for a block to be encoded, using an encoded reference picture; setting a plurality of blocks located in predetermined positions relative to the position of the block to be encoded as primary candidate blocks, and determining N primary candidate reference motion vectors from motion vectors used in encoding the primary candidate blocks; calculating degrees of reliability of the primary candidate reference motion vectors using encoded picture information for each of the primary candidate reference motion vectors; selecting upper M primary candidate reference motion vectors having higher degrees of reliability from the N primary candidate reference motion vectors as secondary candidate reference motion vectors; and calculating a predictive motion vector of the block using the secondary candidate reference motion vectors, and encoding a residual between the motion vector and the predictive motion vector.EFFECT: high efficiency of motion vector prediction.18 cl, 17 dwg