IMAGE ENCODING METHOD, IMAGE DECODING METHOD, IMAGE ENCODING DEVICE AND IMAGE DECODING DEVICE Russian patent published in 2016 - IPC H04N19/176 H04N19/51 H04N19/513 H04N19/52 

FIELD: information technology.

SUBSTANCE: invention relates to encoding images. Image encoding method comprises deriving step (S1201) of deriving a candidate of a predicted motion vector from an adjacent motion vector; adding step (S1202) of adding candidate to a list; a selecting step (S1203) of selecting predicted motion vector from list; and encoding step (S1204) of encoding a current block and encoding a current motion vector. In deriving step (S1201), when a current reference picture and an adjacent reference picture are each determined to be a long-term reference picture, candidate is derived by a first deriving method. When current reference picture and adjacent reference picture are each determined to be a short-term reference picture, candidate is derived by a second deriving method.

EFFECT: technical result is higher prediction accuracy and efficiency of encoding.

20 cl, 34 dwg