Mobile communication systems provide more kinds
of advanced video services. One of the most significant problems
of mobile video communication is to adapt video content to
different network characteristics, which is critical to acceptable
visual quality of the transmitted videos. This paper proposes a
frame selection scheme for temporal video transcoding through
frame complexity analysis that consists of visual complexity and
temporal coherence. Visual complexity represents the importance
of frames and temporal coherence reveals the consequences of
frame skipping; both of these two features are good indicators to
determine if a frame should be kept. Experimental results show
that our proposed method achieves higher visual quality and has
more encoded frames than other existing schemes in the same
bitrate, which means that our proposed method achieves high
accuracy in selecting the representative frames for temporal video
transcoding. The proposed method also has better video quality
assessment scores than that of other existing methods, which
means the proposed method keeps higher level of integrity of the
transcoded videos.
Relation:
IEEE TRANSACTIONS ON BROADCASTING, V.59 N.1 : 38-46.
