Visual quality assessment

This lecture explores the concept of quality in multimedia content, discussing its measurement, trends in assessment, and the challenges faced. It covers the definition of quality, Aristotle's classification, ISO 9000 standards, and the blind men and the elephant analogy. The lecture delves into quality assessment in telecommunications, computer networks, and communications, focusing on Quality of Service (QoS) frameworks. It also examines subjective evaluation methodologies, test environments, material, and methodologies, including ITU recommendations. Additionally, it discusses objective quality metrics, MOS predictors, and fidelity measures, such as PSNR, SSIM, and HVS-based metrics. The lecture concludes by addressing challenges in Quality of Experience (QoE) modeling and certification mechanisms for multimedia services and products.