Quality estimation of monochrome video using quality of each frame

In this paper, we will propose a picture quality scale (PQS(vs)) for video, applying the objective evaluation values of picture quality of still pictu res for each frame of the monochrome video. This is an evaluation method ba sed on the mean opinion score (MOS), which is obtained from the subjective evaluation of the picture quality when each frame of the video is considere d as a still picture. First, for a video in which one sequence consists of 150 frames, a subjective evaluation experiment is carried out and the MOS i s determined for several distinctive frames, and then the picture quality e valuation scale PQ(still2) of the still picture is prepared. For the estima tion methods of the MOS from 150 evaluation values of PeS(still2), we have studied the method of using the worst value of the short-interval average o f PQS(still2) and the method of estimating the MOS from the linear multiple regression of average value and worst value of PQS(still2). From these met hods, high-accuracy estimation of MOS can be performed for the video whose picture quality evaluation values are stable throughout the sequence. (C) 2 000 Scripta Technica.