VIDEO QUALITY MODEL, METHOD FOR TRAINING A VIDEO QUALITY MODEL, AND METHOD FOR DETERMINING VIDEO QUALITY USING A VIDEO QUALITY MODEL

摘要

A big challenge for Video Quality Measurement (VQM) on bitstream-level, especially in the case of network impairment, is to predict the quality level of Error Concealment (EC) artifacts at the bitstream level before decoding the video. The present invention is based on the recognition of the fact that the effectiveness of various EC methods can be estimated from some common content features and compression technique features. The invention comprises selecting training data frames (PIS) of a predefined type, analyzing (2044) predefined typical features (TF) of the selected training data frames, decoding (915) the training data frames using the target video decoder, wherein the decoding may comprise EC, and performing video quality measurement. The video quality of the decoded and error concealed training data frames is measured or estimated using a reference VQM model.