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When human subjects assess the quality of multimedia data, high level perceptual processes such as focus of attention (FoA) and eye movements are believed to play an important role in such tasks. While prior art reports incorporation of visual FoA into objective quality metrics, audio-visual FoA has been rarely addressed and utilized in spite of the importance and presence of both audio and video...
The multimedia bitstream is comprised of variable length codes (VLC) to a large extent. If data hiding is carried out in multimedia compressed domain, VLC are usually chosen as the hidden object. The VLC-coded efficiency is a key factor which can directly affect the method of data hiding. MPEG-I layer III (MP3) audio is chosen as analytical object in this paper. The VLC-coded rule is obtained by analyzing...
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