Patent ID: 11870974
Assignee: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. An apparatus in a video system comprising a processor and a non-transitory memory with instructions thereon, wherein the instructions upon execution by the processor, cause the processor to:
derive, during a conversion between a current block of video and a bitstream of the current block, at least one combined affine model using multiple original affine models with control point motion vectors; and
perform the conversion by using the at least one combined affine model,
wherein each of the at least one combined affine model has a first set of control point motion vectors, wherein the multiple original affine models have multiple second sets of control point motion vectors, respectively, and wherein each control point motion vector in the first set of control point motion vectors is a function of corresponding control point motion vectors in each of the multiple second sets of control point motion vectors,
wherein the control point motion vectors of the multiple second sets used in a same one function are motion vectors of control points at a same position in different original affine models.