An estimated QoE model for video telephone service

Abstract

It is of vital importance to make audiovisual quality assessment, as the growing demand on video telephone services. Users are more enjoying higher quality of video telephone, and their perceptions on video telephone service will directly influence the service provider's performance. So it is significant to study end users' subjective perception, named as Quality of Experience (QoE), on video telephone. In this paper, subjective tests have been conducted with participation from laboratories with ages ranging from 20 to 40, and we analyze the collected data and build a QoE model for evaluating video telephone services, considering different video telephone content types. The QoE model, named as Video-Telephone-Mean Opinion Score model, directly focuses on end-users' feeling. The key performance indicators (KPIs) are mapped to QoE score. The performance of model for QoE evaluation on video telephone quality has been verified via plenty subjective Mean Opinion Score (MOS) test, which includes 120 video telephone samples with 2760 valid votes. The Pearson Correlation Coefficient between VT MOS and MOS is 0.90, which indicates that this model can be used to evaluate users' perception on video telephone quality.