Transport à fiabilité partielle d'images compressées
sur les réseaux à commutation de paquets

Abstract : Although data can have various and multiple constraints, their transport over the Internet are based on TCP
and UDP almost exclusively. The end-to-end approach enables the transport service adaptation according to
the type of data as a function of the quality of service provided by networks. Generally speaking, multimedia
data are loss-tolerant, so it can afford lossy compression without compromising further human interpretation
after reconstruction if the lost piece of information are well controlled. This requires a transport service well
suited for the needs of the multimedia applications, with the association of the partial reliability concept and
deterministic error recovery mechanisms.
In this thesis we proposes a partially reliable transport service intended to the transmission of compressed
still images over best effort networks. We aim to find a tradeoff between the saving of time and the degradation
enabled by the partial reliability. A partially reliable service called 2CP-ARQ is presented for that
purpose. First, the compliance of 2CP-ARQ with the JPEG2000 standard has been studied. It shows the
need to develop a compression scheme that produces independent units suited for packet encapsulation
by the transport layer. It leads to the development of a compression scheme 2CP-ARQ conscious in order
to satisfy the requirements of the partially reliable service but also that benefits from it. Results show that
2CP-ARQ transport service reduces the network resources consumption while the quality degradation for
the reconstructed images can be bounded.
Document type :
Theses
Networking and Internet Architecture [cs.NI]. Université Henri Poincaré - Nancy I, 2007. French


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Submitted on : Thursday, August 30, 2007 - 12:46:48 PM
Last modification on : Thursday, August 30, 2007 - 2:06:35 PM

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Thomas Holl. Transport à fiabilité partielle d'images compressées
sur les réseaux à commutation de paquets. Networking and Internet Architecture [cs.NI]. Université Henri Poincaré - Nancy I, 2007. French. <tel-00168798>

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