Patent ID: 11924408
Assignee: TENCENT AMERICA LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. An apparatus, comprising:
processing circuitry configured to:
decode a video bitstream to obtain a reduced-resolution residual block for a current block;
determine that a block level flag is set to a pre-defined value, the pre-defined value indicating that the current block is coded in reduced-resolution coding;
based on the block level flag,
construct a motion vector candidate list for the current block, the motion vector candidate list including a scaled motion vector generated by scaling a motion vector of a first neighboring block of the current block based on a down-sampling factor of the current block and based on a down-sampling factor of the first neighboring block;
generate a reduced-resolution prediction block for the current block by down-sampling a full-resolution reference block of the current block, the reference block being determined from the motion vector candidate list;
generate a reduced-resolution reconstruction block for the current block based on the reduced-resolution prediction block and the reduced-resolution residual block; and
generate a full-resolution reconstruction block for the current block by up-sampling the reduced-resolution reconstruction block.