A real time single ended algorithm for objective quality monitoring of compressed video signals

摘要

Digital compression methods based on MPEG2 are now in widespread use for broadcasting of video content. Multiple television and radio programs can be multiplexed and transmitted altogether within the same bandwidth where formerly only one analog program fit. With the analog television video quality was very much a matter of the transmission chain and all the elements along the line. Once a sufficiently high video quality level was achieved, it was nearly independent from the content. In using digital compression and transmission techniques the video quality is now strongly content and compression dependent. The changes in video quality can be very abrupt from scene to scene. A method that is capable of following all these changes in real time and displaying the picture quality, as a function of time, is required for continuous video quality monitoring. This paper describes a single ended method that does not require a reference signal and is capable of processing the video in real time concerning picture deficiencies of a compressed video.