Quality equalization in video coding and its effectiveness on the lowest MOS improvement
Details
The authors have proposed a video coding technique which adaptively controls the video frame rate and the average bit amount per frame to maximize an estimate for the subjective video quality (MOS) under a constant-bit-rate contstraint. The technique, however, suffers from quality variation over scenes of a target video. This paper thus proposes a technique for video quality equalization over scenes by improving the lowest quality in the target video, which is realized by adaptively varying the bit rate for each scene under the assumption that the transmission bit rate is constant and that a large-size buffer is available. The technique is then applied to videos with several scenes to verify the lowest MOS improvement. The relation between the video quality improvement and the buffer size is also investigated.
