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5. Performance
The efficiency of a compression format depends on intrinsic and extrinsic factors.
5.1 Intrinsic factors
Intrinsic performance factors, i.e. those directly linked to codec specifications, depend on :
1) the type of algorithm used, for example in image compression: DCT (with JPEG, MPEG... formats) or DWT (with JPEG 2000 format) for still or moving images (figure 13 );
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2) the compression format itself, for example :
MPEG Audio compared to G.722/G.723...
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Performance
Conclusion
Bibliography
Principles
- (1) - GOUYET (J.-N.) - Systèmes audio et vidéo numériques. - Codage de source – Réduction de débit, Chap. 10, Institut national de l'audiovisuel, Techniques et production audiovisuelles, Paris, ISBN 2-86938-030-5 (1993).
Audio
Standards and norms
Audio
- Information technology – Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s – Part 3: Audio http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=22412 - ISO/IEC 11172-3 - 1993
- Information technology – Generic coding of moving pictures and associated audio information – Part 3: Audio http://www.iso.org/iso/iso_catalogue/catalogue_ics/catalogue_detail_ics.htm?csnumber=22991...
Directory
Organizations – Federations – Associations (non-exhaustive list)
ATSC (Advanced Television Systems Committee) http://www.atsc.org/
DCI (Digital Cinema Initiatives LLC) http://www.dcimovies.com/
EBU (European Broadcasting Union)...
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