Method and apparatus for motion field based tree splitting

A device for encoding or decoding a video sequence, the device comprising:

• at least one memory configured to store program code;
• at least one processor configured to read the program code and operate as instructed by the program code, the program code including:
• first partitioning code configured to cause the at least one processor to partition the video sequence into coding tree units, each coding tree unit including at least one coding tree block and each coding tree block including at least one coding block,
• first determining code configured to cause the at least one processor to determine the motion field of the at least one coding block,
• second determining code configured to cause the at least one processor to determine whether the motion field of the at least one coding block is homogenous or heterogeneous, and
• third determining code configured to cause the at least one processor to determine whether to signal a further partition of the at least one coding block based on the determination of whether the motion field of the at least one coding block is homogenous or heterogeneous.

A non-transitory computer-readable medium storing instructions, the instructions comprising:

• one or more instructions that, when executed by one or more processors of a device, cause the one or more processors to:
• partition a video sequence into coding tree units, each coding tree unit including at least one coding tree block and each coding tree block including at least one coding block,
• determine the motion field of the at least one coding block,
• determine whether the motion field of the at least one coding block is homogenous or heterogeneous, and
• determine whether to signal a further partition of the at least one coding block based on the determination of whether the motion field of the at least one coding block is homogenous or heterogeneous.