Patent ID: 11917191
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of decoding a motion vector, the method comprising:
obtaining a flag indicating whether a prediction mode of a current prediction unit is a merge mode which uses a motion vector included in merge motion vector candidates;
when the flag indicates that the prediction mode of the current prediction unit is the merge mode, obtaining the merge motion vector candidates by using a motion vector of a temporally neighboring prediction unit that is temporally related to the current prediction unit and motion vectors of spatially neighboring prediction units that are spatially related to the current prediction unit;
when a number of motion vectors included in the obtained merge motion vector candidates is smaller than n−1, wherein n is a predetermined integer number, adding a plurality of zero vectors to the obtained merge motion vector candidates so that the number of motion vectors included in the merge motion vector candidates reaches the n;
obtaining an index indicating a motion vector from among the n motion vectors included in the merge motion vector candidates from a bitstream; and
obtaining a motion vector of the current prediction unit by using the motion vector indicated by the obtained index,
wherein the predetermined integer number n is determined based on information regarding the predetermined integer number n, the information being included in at least one of a sequence parameter set (SPS), a picture parameter set (PPS), and a slice header,
wherein the spatially neighboring prediction units comprise a spatially neighboring prediction unit located on a lower left side of the current prediction unit.