EVALUATING THE QUALITY OF METHODS AND METRICS IN DIGITAL MULTIMEDIA SYSTEMS

The rapid advancement of digital multimedia technologies has necessitated rigorous evaluation methodologies to ensure that they meet user expectations and standards. Digital multimedia systems have become integral to various applications ranging from entertainment to education and communication. The quality of these systems significantly impacts user experience and satisfaction. Service providers are enacting different quality of service (QoS) solutions to issue the best quality of experience (QoE) to their customers. Thus, devising precise quality metrics that will greatly help to improve multimedia services over networks. In this paper, we provide a comprehensive analysis of the works that have been carried out over recent years in audio, video and audio­visual quality assessments, describing existing methodologies in terms of requirement of a reference signal, feature extraction, feature mapping and classification schemes. The review also aims to explore the existing methods and metrics used to assess the quality of multimedia systems, considering both subjective and objective approaches. We will provide a comprehensive evaluation of their effectiveness, applicability, and limitations, thereby identifying areas for future research.