JVET-AC0079 [AHG15] Effect of the perceptual QP adaptation (QPA) on machine task performance [C. Kim, D. Gwak, J. Lim (LGE)]

This contribution reports the impact of the perceptual QP adaptation (QPA) on machine task performance. VTM 12.0 with QPA enabled configuration is used for encoding open image dataset that was used in the evaluation of the VCM CfP and object detection was performed using the decoded results. Experimental results reportedly show 15.17% BD rate gain for object detection.

Mainly effective for high QPs. It was reported by another participant that similar experiments were performed with other data sets, where in some cases gains, but sometimes also losses occurred.

It was suggested to study how this would combine with other approaches of VCM-related encoder optimization. In the current contribution, the VTM anchor was improved.

Further study was recommended.

It was suggested to have a BoG (coordinated by C. Hollmann and S. Liu) to meet after the joint meeting with WG 4 which should further discuss testing condition and a plan for software development.