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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.
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Submitted on : Thursday, March 29, 2018 - 10:39:27 AM
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  • HAL Id : tel-01746515, version 1



Thomas Holl. Transport à fiabilité partielle d'images compressées sur les réseaux à commutation de paquets. Autre. Université Henri Poincaré - Nancy 1, 2007. Français. ⟨NNT : 2007NAN10051⟩. ⟨tel-01746515⟩



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