Summary

Video quality metrics are intended to provide calculated values that are strongly correlated with viewer subjective assessments. This Recommendation provides methods for curve fitting VQM objective values to subjective data in order to facilitate the accuracy calculation, an algorithm to quantify the accuracy of a given VQM, a simplified root mean square error calculation to quantify the accuracy of a VQM when the subjective data has roughly equal variance across the VQM scale, and a method to plot classification errors to determine the relative frequencies of "false tie", "false differentiation", "false ranking", and "correct decision" for a given VQM.