Watermarking is proposed as solution to authentication, copyright protection and security
requirements of multimedia objects (speech, image and video). In this paper a watermarking …

Discrete tomography focuses on the reconstruction of functions from their line sums in a
finite number d of directions. In this paper we consider functions f: A→ R where A is a finite …

Mobile wireless communication technology is a fast developing field and every day new
mobile communication techniques and means are becoming available. In this thesis multi …

Les codes à effacement permettent de générer de la redondance de données numériques
dans un système de stockage distribué. Cette redondance permet de restaurer une partie …