Distortion over latency: Novel metric for measuring interactive performance in remote rendering systems

Abstract

A new metric distortion over latency (DOL) is proposed in this paper to overcome the deficiency of the traditional metric interaction latency in measuring the interactive performance of the modern remote rendering systems, which are enhanced with different latency reduction techniques. The proposed metric is novel in combining both latency and rendering quality into one score for measurement. Our experiments validate that in many scenarios, our new metric can effectively distinguish the performance difference between systems while interaction latency can not. The paper also introduces how DOL can be efficiently calculated at runtime.

Survey on Quality of Experience Evaluation for Cloud-Based Interactive Applications

“…In this case, the authors did not provide an order of magnitude of the time difference that would allow the user to be satisfied with the CIA, and they required the client and the cloud server to be close to each other during the test. Finally, Shu Shi et al [43] proposed their distortion-over-latency (DOL) metric, seeking to combine interactivity time and rendering quality in cloud gaming CIAs. To obtain the DOL, the authors calculated the distortion between the screen update rendered by the thin client and the ideal screen update before being sent by the cloud server.…”