Error tolerance schemes for H.264/AVC (and a quick introduction to hierarchical modulation for satellite communications)


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Charlista: 
Hugo Meric
Fecha: 
18 Junio, 2013 - 16:00
Sala: 
Auditorio cuarto piso
Organización: 
José Miguel Piquer
Bio: 

Hugo Meric received his Ph.D. degree from Institut Superieur de l’Aeronautique et de l’Espace (ISAE) in 2012. He holds an engineer degree from ISAE and a master of research from Universite Paul Sabatier (Toulouse, France), both received in 2009. His research focuses on satellite communications, networking and video transmission.

Abstract :

 

Video transmission is sensitive to losses due to high compression efficiency. To tolerate the quality degradation from losses, Forward Error Correction (FEC) and error resilience schemes are used. During the presentation, I will present a performance evaluation of error tolerance schemes with the latest video coding standard, H.264/AVC. By the analysis in three zones, I will show that no FEC scheme outperforms the others in a wide range of packet loss rates. Moreover, a comparison of the equal and unequal FEC schemes with the Flexible Macroblock Ordering (FMO) error resilience scheme is also discussed. The results point out that FMO scheme performs well in moving videos while FEC protection schemes are better in rather static videos. The results and analysis presented here would help to design flexible schemes which are able to adapt to the variations of loss rate.

 

In a second time, I will quickly introduce hierarchical modulation and present some applications for satellite communications.