Nesrine KHERNANE : "Collaborative multimedia sensors for a connected and smart city"

Abstract :

Wireless Video Sensor Networks (WVSN) are today considered as a promising technology, notably because of the availability of miniaturized multimedia hardware e.g., CMOS cameras). Unlike traditional wireless sensor network (WSN), wireless multimedia sensor networks capture rich multimedia content (videos, images, etc.). Because of the huge volume of multimedia data, particularly video data (the size of videos much more important than scalar data), on one hand and the limited resources of the sensor nodes on the other hand, deploying and managing a WMSN remain an active research field. In addition, multimedia data have the ability to be captured and delivered at different visual quality i.e., better the quality, higher the encoding power (namely, the compression level) and higher the volume of the produced data. However, delivering high data rates will draw down the resources of the network, in particular the energy of nodes, as the latter are driven by batteries.

This dissertation mainly focuses on the network lifetime maximization problem while ensuring a distributed control and respecting the desired video quality at the end user. To do so, two main axes have been considered, namely, the data processing axis and data routing axis. The first axis tackles the problem of finding a trade-off between the encoding power at the source node and the desired video quality at the end user. While the second axis tackles the routing of the compressed data through the efficient existing paths.

Jury :

- Prof. Stefano SECCI, CNAM, Reviewer.
- Prof. Anthony BUSSON, Ecole normale supérieur de LYON, Reviewer.
- Prof. Maria POTOP-BUTUCARU, Sorbonne Université, Examiner.
- Prof. Raphaël COUTURIER, Université Bourgogne Franche-comté, Examiner.
- Assoc Prof. Ahmed MOSTEFAOUI, Université Bourgogne Franche-comté, Supervisor.
- Assoc Prof. Jean-François COUCHOT, Université Bourgogne Franche-comté, co-Supervisor.

Location : ’Amphithéâtre 4,  bâtiment A - l'IUT de Belfort-Montbéliard, 19 Avenue du Maréchal Juin, Belfort