Patent ID: 11902508
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. The apparatus of claim 1, wherein the video coder is further configured to:
determine a second prediction block based on an initial second motion vector of the current block in a second reference picture of the current block;
obtain a second extension block based on the second prediction block, wherein the second extension block comprises the second prediction block and at least one boundary block adjacent to the second prediction block, wherein a size of the second extension block is the same as the size of the first extension block;
obtain one or more second reference blocks in the second reference picture, wherein each second reference block is associated with a combination of the initial second motion vector and one of the one or more motion vector offsets, and wherein a size of the second reference block is the same as the size of the second extension block;
correspondingly, for obtaining the target motion vector offset with the smallest cost among the one or more motion vector offsets based on the matching cost comparison involving the one or more first reference block and the initial prediction block, the video coder is further configured to:
obtain the target motion vector offset with a smallest cost among the motion vector offsets based on the matching cost comparison involving the one or more first reference block, the one or more second reference block and the initial prediction block; and
correspondingly, for obtaining the refined prediction block of the current block based on the refined first motion vector, the video coder is further configured to:
obtain the refined prediction block of the current block based on the refined first motion vector and a refined second motion vector, wherein the refined second motion vector is a combination of the initial second motion vector and the target motion vector offset.