Sub-block MV inheritance between color components
摘要
說明書
In addition, when MV0 and MV1 refer to the current picture (i.e., CPR mode), MV*x and MV*y are further rounded to remove the part with a higher precision than full pixel to make sure the integer MV is obtained: MV*x=(MV*x/16)<<4, and MV*y=(MV*y/16)<<4.
It is noted that for each pair, if one of the two is coded with CPR and the other is not, such pair is disallowed to generate the pairwise average candidate.
The concept of the triangular prediction mode (TPM) is to introduce a new triangular partition for motion compensated prediction. It splits a CU into two triangular prediction units, in either diagonal or inverse diagonal direction. Each triangular prediction unit in the CU is inter-predicted using its own uni-prediction motion vector and reference frame index which are derived from a single uni-prediction candidate list. An adaptive weighting process is performed to the diagonal edge after predicting the triangular prediction units. Then, the transform and quantization process are applied to the whole CU. It is noted that this mode is only applied to merge mode (note: skip mode is treated as a special merge mode). Uni-prediction candidate list for TPM.
