JVET-D0186 PSNR unification for sequential and parallel results for JVET CTC [M. Sychev (Huawei Technologies)] [late]

The current version of Reference SW allow sequential and parallel simulation, but has some deviations from corresponding sequential simulation due to rounding in logs, most of real values are shown with just 4 digit after point. This contribution provides additional full precision representation of PSNR, bit-rate in logs and adopts aggregation scripts from JVET-B0036 to use this metrics, what removes any rounding steps in parallel simulation results calculation. At the previous JVET meeting the contribution JVET-C0037 was proposed to obtain the same PSNR results. During AhG discussions it was suggested to review and discuss PSNR unification at this meeting to get the clear decision.

C0037 had two aspects, where one was adopted and about the second aspect there was a debate since the output is not human readible.

Follow-up on C0037. Approach to have an option to output a separate file for results measurements with high accuracy (section 1.2).

Decision (SW): Adopt solution 1.2, write into separate file (switchable).

Joint Meetings, BoG Reports, and Summary of Actions Taken

Exploration Experiments

The setup of Exploration Experiments was discussed, and an initial draft of the EE document was reviewed in the plenary (chaired by JRO). This included the list of all tools that are intended to be investigated in EEs during the subsequent meeting cycle:

EE1: Residual Coefficients coding

JVET-D0186 PSNR unification for sequential and parallel results for JVET CTC [M. Sychev (Huawei Technologies)] [late]

Decision (SW): Adopt solution 1.2, write into separate file (switchable).