Title :
SpokenContent representation in MPEG-7
Author :
Charlesworth, Jason P A ; Garner, Philip N.
Author_Institution :
Reech Capital PLC, London, UK
fDate :
6/1/2001 12:00:00 AM
Abstract :
The words spoken in an audio-visual document form an obvious and intuitive metadata component. This component is essential to ensure comprehensive coverage of audio-visual content by the MPEG-7 standard. With manual transcription prohibitively costly, such metadata will typically be derived from automatic speech recognition systems. The errors inherent in the output of such extraction tools cause particular difficulties for robust retrieval, as well as for interoperability in heterogeneous databases. We describe a structure comprising a probabilistic combined word and phone lattice along with an explanatory metadata header and detail how this structure avoids or ameliorates these problems
Keywords :
audio-visual systems; distributed databases; meta data; multimedia databases; open systems; probability; speech recognition; telecommunication standards; MPEG-7; MPEG-7 standard; SpokenContent representation; audio-visual content; audio-visual document; automatic speech recognition systems; heterogeneous databases; interoperability; metadata component; metadata header; multimedia documents; probabilistic combined word/phone lattice; robust retrieval; speech extraction tools; Automatic speech recognition; Databases; Histograms; Humans; Lattices; MPEG 7 Standard; Robustness; Speech recognition; Switches; Usability;
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
