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ICC
2009
IEEE
13 years 7 months ago
On the Interaction Between Channel Coding and Hierarchical Modulation
1 Classical systems using hierarchical modulation (such as DVB-SH) involve a "high-priority" (HP) and a "lowpriority" (LP) bit stream that are separately and in...
Seyed Mohammad Sajad Sadough, Pierre Duhamel
SOUPS
2005
ACM
14 years 3 months ago
Authentication using graphical passwords: effects of tolerance and image choice
Graphical passwords are an alternative to alphanumeric passwords in which users click on images to authenticate themselves rather than type alphanumeric strings. We have developed...
Susan Wiedenbeck, Jim Waters, Jean-Camille Birget,...
ICASSP
2007
IEEE
14 years 4 months ago
Distributed Coding of Shifts using the DFT Phase
In this paper we consider the problem of image encoding with side information at the decoder, where the side information is an integer shifted version of the image at the encoder....
Marco Dalai, Riccardo Leonardi, Pier Luigi Dragott...
ICIP
2004
IEEE
14 years 11 months ago
Wyner-ziv video coding with hash-based motion compensation at the receiver
In current interframe video compression systems, the encoder performs predictive coding to exploit the similarities of successive frames. The Wyner-Ziv Theorem on source coding wi...
Anne Aaron, Shantanu Rane, Bernd Girod
FOSSACS
2004
Springer
14 years 3 months ago
Electoral Systems in Ambient Calculi
This paper compares the expressiveness of ambient calculi against different dialects of the pi-calculus. Cardelli and Gordon encoded the asynchronous pi-calculus into their calcul...
Iain Phillips, Maria Grazia Vigliotti