US Patent Application 17984107. SUBBLOCK LEVEL TEMPORAL MOTION VECTOR PREDICTION WITH MULTIPLE DISPLACEMENT VECTOR PREDICTORS AND AN OFFSET simplified abstract
SUBBLOCK LEVEL TEMPORAL MOTION VECTOR PREDICTION WITH MULTIPLE DISPLACEMENT VECTOR PREDICTORS AND AN OFFSET
Organization Name
Inventor(s)
Guichun Li of San Jose CA (US)
Xin Zhao of Santa Clara CA (US)
SUBBLOCK LEVEL TEMPORAL MOTION VECTOR PREDICTION WITH MULTIPLE DISPLACEMENT VECTOR PREDICTORS AND AN OFFSET - A simplified explanation of the abstract
This abstract first appeared for US patent application 17984107 titled 'SUBBLOCK LEVEL TEMPORAL MOTION VECTOR PREDICTION WITH MULTIPLE DISPLACEMENT VECTOR PREDICTORS AND AN OFFSET
Simplified Explanation
- The patent application describes a method and apparatus for processing video bitstreams. - The processing circuitry receives a coded video bitstream that includes a current picture with a current block. - The circuitry determines that the current block is coded in a subblock-based temporal motion vector prediction (SbTMVP) mode. - It determines a plurality of displacement vector (DV) predictor (DVP) candidates and receives a base index and DV offset for the current block. - Based on this information, the circuitry determines a DV that indicates a block collocated with the current block in a reference picture. - The circuitry then reconstructs a subblock in the current block based on motion information from a corresponding subblock in the collocated block.
- Simplified Explanation:
- The patent application describes a method and device for processing video data. - It determines how a current block in a video is coded using a specific mode. - It calculates displacement vectors based on predictor candidates and offsets. - These displacement vectors help reconstruct subblocks in the current block using motion information from a reference picture.
Original Abstract Submitted
Aspects of the disclosure provide a method and an apparatus including processing circuitry that receives a coded video bitstream comprising a current picture that includes a current block. The processing circuitry determines, based on a syntax element in the coded video bitstream, that the current block including a plurality of subblocks is coded in a subblock-based temporal motion vector prediction (SbTMVP) mode. The processing circuitry determines a plurality of displacement vector (DV) predictor (DVP) candidates and receives a base index indicating a DVP in the plurality of DVP candidates and a DV offset of the current block. The processing circuitry determines a DV based on the DVP and the DV offset. The DV indicates a block collocated with the current block in a collocated reference picture. The processing circuitry reconstructs a subblock in the plurality of subblocks based on motion information of a corresponding subblock in the collocated block.
