Direct Scaling & Quality Prediction for perceptual Video Quality Dimensions

This paper reports the further investigation of the perceptual quality space for video degradations [1], [2]. First, a new method is presented for directly assessing the identified perceptual quality dimensions. This method makes it possible to assess more test conditions in the same time, due to the reduced experimental effort. We tested this method in an user experiment. The method itself as well as the results are presented. Besides the rating of the perceptual quality dimensions, the test participants are also asked to rate the overall quality of the video. This allows drawing conclusions of the composition of the underlying quality dimensions to form overall quality for video. Second, an overall quality prediction model on the basis of the before investigated perceptual dimensions is presented. The results of the model are compared to the ratings obtained from subjective testing.