JVET-AF0226 AHG12: SGPM with IntraTMP and IBC [K. Naser, F. Le Léannec, P. Bordes, Y. Chen (InterDigital)] [late]

SGPM is an intra mode with prediction signal generated by blending 2 intra prediction modes with specific split line. This contribution proposes further including block-vector based prediction obtained from IntraTMP or IBC modes of the neighbouring blocks in the candidate list of SGPM. The results are obtained:

• AI: -0.04% -0.05% -0.07% EncT 100.6% DecT 100.5%

In SC classes (Class F and TGM)

• AI: -0.54% -0.44% -0.46% EncT 99.65% DecT 102.35%

IntraTMP and IBC modes are made available to SGPM, which seems to be a straightforward extension.

It was asked why decoding time fluctuates from class to class. The proponent said some small increase in decoding time is expected, and more accurate decoding time could be provided during EE.

Several experts expressed interest in studying this in an EE.

It was agreed to investigate this in an EE.