.. Huawei video research teams combined ergonomics, sample research, and in-depth technical studies to identify the top three factors that affect the video experience: video quality, interactive experience, and video view experience.
Huawei defines three core philosophies in U-vMOS, which can measure these three main factors.
- Core philosophy 1: Huawei carried out in-depth research on the limits of the human eye and how much resolution it can actually take in. The grading standard from the subjective viewing experience of various users watching videos of different resolutions on screens of different sizes from a typical distance is also defined in the algorithm. U-vMOS supports a resolution ranging from 360P to 8K and video played on screens ranging from 4.5 inches to 100 inches, breaking through the confines of the original vMOS definition in which differences could only be compared across screens with the same resolution. Considering the features of the human eye and actual reactions from viewers over different screens with varying resolutions, a score is assigned with the optimal viewing experience of the human eye as the full score.
- Core philosophy 2: With data from extensive lab tests and verifications, Huawei defined the objective indicators that evaluate user interoperability in varying use scenarios and the viewing experience, including the initial loading time, zapping time, and seek response time. This philosophy enables the U-vMOS to measure user experience indicators throughout the viewing process.
- Core philosophy 3: Huawei takes sample analysis on the subjective preferences of various audiences in different video application scenarios, and sets up a mathematical model that uses those preferences and parameters as weights. Huawei then adds a subjective preference parameter to the formula so that the U-vMOS system can adapt to different scenarios and continue to expand its "knowledge base".