Correspondence:
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Corresponding author: J.P. Guédon, École polytechnique de lúniversité de Nantes, La Chantrerie, BP 50609, 44306 Nantes, France. Tel.: +33 240 683 044; Fax: +33 240 683 066.
Abstract: A new IP multimedia distributed system is presented. The two main functionalities are error-resilience for image and video transmission and storage and distribution of partial information among several servers in order to use different internet routes. The system is based on a redundant transform called the Mojette transform that projects the original information into different pieces. Our group has developed this transform for the last five years. The main theoretical results of the Mojette transform are recalled for the 2-D and 3-D cases. The transform is then used to break a data volume into several pieces and to transmit or store them with several levels of redundancy such that a receiver is able to reconstruct the original message by a subset of pieces despite erasures. The second main feature is to provide insufficient pieces onto a single server to avoid a network information theft whereas being able to use the redundancy located on other servers to rebuild the information after the network destruction of a server. The characteristics of this distributed system are exemplified. The relationships with quality of service and multiple description theory are analyzed and exemplified with the telemedecine case. Finally, a multiple description scheme with prioritized flows is defined and implemented. The Mojette operators and the resultant multimedia distributed architecture is valid both for any multimedia signals (image, video, voice) to be encoded and those already encoded and available as bit streams.
Keywords: mojette transform, IP multimedia distributed system, multiple description, quality of service
