Multi-feature combined blurred screen video quality diagnosis method

The invention discloses a multi-feature combined blurred screen video quality diagnosis method. The method comprises the following steps: acquiring a to-be-diagnosed video stream and extracting a video frame; respectively extracting a density sensitivity feature, a histogram similarity feature and a coding block motion feature from the extracted video frame; and according to the density sensitivity feature, the histogram similarity feature and the coding block motion feature, establishing a blurred screen video quality diagnosis feature weight distribution fitting score formula. According to the multi-feature combined blurred screen video quality diagnosis method, the density sensitivity feature, the histogram similarity feature and the coding block motion feature are combined to evaluate the blurred screen video quality, so that the problem of inaccurate evaluation result caused by adopting a single feature to evaluate the video quality in the prior art is solved; and meanwhile, a lightweight optical flow pr