METHOD AND APPARATUS FOR ASSESSING THE QUALITY OF A VIDEO SIGNAL DURING ENCODING AND TRANSMISSION OF THE VIDEO SIGNAL

摘要

Method and apparatus for assessing the quality of a transmitted video signal sequence at the receiver side, the method comprising the steps of: a) capturing the received input video bit stream prior to decoding and supplying it to a video bit stream analyzer; b) extracting, during a measurement time window, one or more features from the packet headers of the captured input video bit stream by the bit stream analyzer; c) determining from the one or more features, and optionally from meta-information known about the media stream such as the slicing configuration, a single parameter, xwpSEQ, representing the magnitude of signal degradation due to packet-loss; d) supplying the determined parameter to a quality estimation module; and e) calculating, by the quality estimation module, a quality measure due to packet loss, Qtrans, based on the single parameter representing the magnitude of signal degradation, xwpSEQ, due to packet-loss and based on video resolution information and employed video codec.