JVET-AM0140 Non-EE2: Modifications of the unwrapping and interpolation filtering processes for angular modes [V. Rufitskiy, A. Filippov, T. Dong (TCL)]

In this contribution several improvements of angular intra prediction are proposed: selection of interpolation filter is performed with respect to whether prediction is obtained for a fusion component of TIMD or DIMD, and it is proposed to disable reference smoothing filter when obtaining TIMD predictions. It is reported that on top of ECM-17.0, the overall coding performance for {Y, U, V, EncT, DecT} is: {-0.05%, -0.03%, 0.01%, 99.6%, 99.7%} for AI configuration.

It was asked if the change would have impact on combining TIMD and MRL (which is currently disabled).

Interest was expressed by other experts to investigate this in an EE. The two aspects (not using smoothing, selection of IF in unwrapping) should be investigated separately.

See further notes under JVET-AM0167.