Patent ID: 11871001
Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of decoding an image, the method comprising:
determining control point motion vectors of a current block in response to an affine model prediction being applied to the current block;
determining motion vectors of sub-blocks in the current block based on the control point motion vectors;
reconstructing the current block by performing inter prediction to the sub-blocks in the current block; and
applying a deblocking filter to boundaries between the sub-blocks in the current block,
wherein whether the motion vectors of the sub-blocks are determined based on the control point motion vectors or not is determined based on a size of the current block, and
wherein, when a width of the current block is smaller than 8 or a height of the current block is smaller than 8, the motion vectors of the sub-blocks are not determined based on the control point motion vectors.