Method and apparatus for video coding
AssigneeTencent America LLC
InventorsMeng Xu, Xiang Li, Shan Liu
Life of this patent
Estimating the term…
Abstract
According to an aspect of the disclosure, processing circuitry decodes a constrain flag from a coded video bitstream. The constrain flag is indicative of an exclusion of decoder-side motion vector derivation (DMVD) for reference sample reconstruction. Further, the processing circuitry decodes prediction information of a current block from the coded video bitstream. The prediction information is indicative of an intra prediction mode. Then, the processing circuitry determines, in a same picture as the current block, reference samples for a sample in the current block based on the intra prediction mode and based on the exclusion of the DMVD, and reconstructs the sample of the current block according to the reference samples.
Claims20
A method for video decoding, comprising:
- decoding a constrain flag from a coded video bitstream, the constrain flag being indicative of an exclusion of decoder-side motion vector derivation (DMVD) for reference sample reconstruction;
- decoding prediction information of a current block from the coded video bitstream, the prediction information being indicative of an intra prediction mode;
- determining, in a same picture as the current block, reference samples for a sample in the current block based on the intra prediction mode and based on the exclusion of the DMVD;
- and
- reconstructing the sample of the current block according to the reference samples.
A method for video decoding, comprising:
- decoding prediction information for a current block in a current picture from a coded video bitstream, the prediction information being indicative of an inter prediction mode that includes a motion vector refining step and a final motion compensation step;
- using a first interpolation filter during the motion vector refining step to determine a first refined motion vector that is indicative of a first refined reference block in a first reference frame from an initial motion vector;
- and
- using a second interpolation filter that is different from the first interpolation filter during the final motion compensation step to reconstruct the current block according to the first refined motion vector.
An apparatus for video decoding, comprising:
- processing circuitry configured to:
- decode a constrain flag from a coded video bitstream, the constrain flag being indicative of an exclusion of decoder-side motion vector derivation (DMVD) for reference sample reconstruction;
- decode prediction information of a current block from the coded video bitstream, the prediction information being indicative of an intra prediction mode;
- determine, in a same picture as the current block, reference samples for a sample in the current block based on the intra prediction mode and based on the exclusion of the DMVD;
- and
- reconstruct the sample of the current block according to the reference samples.
Dependencies are inferred from the claim text.