Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloPerformance evaluation of FMO to improve the error resilience of H.264/AVC
Anno di pubblicazione2006
FormatoCartaceo
Autore/iP. Baccichet(1); A. Chimienti(1); E. Quacchio(2); Magli E.(3); G. Olmo(3)
Affiliazioni autori(1)-IEIIT-CNR (2)-STMicroelectronics (3)-Politecnico di Torino
Autori CNR e affiliazioni
  • PIERPAOLO BACCICHET
  • ANTONIO CHIMIENTI VQR
Lingua/e
  • inglese
AbstractThe transmission of compressed video streams over error-prone networks requires an encoder equipped with error resilience tools. The novel H.264/AVC standard supports several of such tools; in particular, it allows to group the macroblocks of an image in a very flexible way by means of the Flexible Macroblock Ordering (FMO) mapping functions. This feature is very useful in terms of robustness towards errors and error concealment, although it introduces some source coding overhead. In this paper we report a thorough performance assessment of FMO for H.264/AVC video transmission over lossy packet networks. We consider sequences in QCIF and CIF resolution, different slicing options, and different bit-rates. We first investigate the overhead of FMO in case of no transmission errors, and then evaluate its performance for wireless transmission, employing a random packet loss model, as well as UMTS error patterns. An advantage of FMO is that, using the checkerboard-like pattern, it is possible to avoid the loss of several consecutive macroblocks, potentially improving the error concealment performance. We introduce a simple error concealment technique that, unlike the JVT concealment, exploits the FMO structure. Simulation results show that FMO provides a significant performance improvement on error-prone channels, and ad-hoc error concealment can further enhance the end-to-end image quality.
Lingua abstractinglese
Altro abstract-
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Pagine da46
Pagine a60
Pagine totali15
RivistaST Journal of Research
Attiva dal 2004
Editore: STMicroelectronics - Agrate Brianza (MI)
Paese di pubblicazione: Italia
Lingua: italiano
ISSN: 1828-2105
Titolo chiave: ST Journal of Research
Titolo proprio: ST Journal of Research.
Titolo abbreviato: ST J. Res.
Numero volume della rivista3
Fascicolo della rivista-
DOI-
Verificato da refereeSì: Internazionale
Stato della pubblicazione-
Indicizzazione (in banche dati controllate)-
Parole chiaveError Concealment, Error Resilience, Flexible Macroblock Ordering, H.264/AVC
Link (URL, URI)-
Titolo parallelo-
Data di accettazione-
Note/Altre informazioni-
Strutture CNR
  • IEIIT — Istituto di elettronica e di ingegneria dell'informazione e delle telecomunicazioni
Moduli CNR
    Progetti Europei-
    Allegati
    • Performance evaluation of FMO to improve the error resilience of H.264/AVC