Perceptual quality assessment of video using machine learning algorithm

Abstract

User experience has become the most reliable and trustworthy source for service providers to assess system performance. To fulfill customer requirements, service providers require an efficient quality of experience (QoE) estimation model. QoE is a subjective metric that deals with user perception and can vary dramatically due to various factors such as emotions, the degree of annoyance, past experience, and aesthetics. Moreover, subjective QoE evaluation is expensive and time-consuming because of human participation. Therefore, a model is required to objectively measure QoE with reasonable accuracy. In the context of service and network providers fulfilling user requirements, with a reasonable quality of service (QoS), needs to be provided to the relevant services/applications. However, QoS parameters do not reflect subjective opinion of the user accurately. Therefore, it is necessary to compute the mapping or correlation between QoS and QoE. The mapping may help service providers to understand the behavior of the overall network on user experience and efficiently manage the network resources. In this paper, a new feature number of displayed frames impacted (NoDFI) along with a machine learning based model is presented to compute a correlation between QoS and QoE. A publically available dataset is used to represent the correlation between objective QoS parameters and subjective QoE metric. The result of experiments showed that proposed feature NoDFI proved to be a valuable addition when compared with previously proposed models.