JVET-H0059 EE1-related: Two unifications for PDPC [H. Jang, J. Nam, J. Lim, S.-H. Kim (LGE)]

This contribution proposes three modification to simplify the planar mode, where PDPC is always applied, in JEM 7.0. The first modification introduces unified reference sample filtering for planar mode as with other conventional intra modes. The second modification includes using a unified reference buffer during PDPC processing. The third modification considers unification of the planar predictor generation process between PDPC and UWP. Three combination of these three modifications had been investigated and test results reportedly show BD-rate difference found in between 0.0% and 0.1% in the AI configuration.

This was probably a useful simplification (in particular, avoiding switching of filters depending on block size in PDPC); however, for the JEM which is an exploration software and not a standards development project itself, this is not of substantial benefit.