Patent ID: 11930205
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A method, performed by a decoder, for decoding a current block in a current picture of a video bitstream, the current picture having a current picture order count, the method comprising:
decoding, from the video bitstream, a first motion vector for the current block relative to a first reference block of a first reference picture having a first picture order count;
decoding, from the video bitstream, a second motion vector for the current block relative to a second reference block of a second reference picture having a second picture order count;
determining whether to refine the first motion vector based on determining whether an absolute difference between the current picture order count and the first picture order count is equal to an absolute difference between the current picture order count and the second picture order count;
responsive to determining to refine the first motion vector, generating a first refined motion vector from the first motion vector; and
performing motion compensation to derive an updated first reference block from the first reference picture using the first refined motion vector.