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320 IEEE TRANSACTIONS ON MULTIMEDIA, VOL. 9, NO. 2, FEBRUARY 2007 An Optimized Content-Aware Authentication
 

Summary: 320 IEEE TRANSACTIONS ON MULTIMEDIA, VOL. 9, NO. 2, FEBRUARY 2007
An Optimized Content-Aware Authentication
Scheme for Streaming JPEG-2000 Images
Over Lossy Networks
Zhishou Zhang, Student Member, IEEE, Qibin Sun, Member, IEEE, Wai-Choong Wong, Senior Member, IEEE,
John Apostolopoulos, Senior Member, IEEE, and Susie Wee, Senior Member, IEEE
Abstract--This paper proposes an optimized content-aware au-
thentication scheme for JPEG-2000 streams over lossy networks,
where a received packet is consumed only when it is both decod-
able and authenticated. In a JPEG-2000 codestream, some packets
are more important than others in terms of coding dependency
and image quality. This naturally motivates allocating more redun-
dant authentication information for the more important packets in
order to maximize their probability of authentication and thereby
minimize the distortion at the receiver. Towards this goal, with the
awareness of its corresponding image content, we formulate an op-
timization framework to compute an authentication graph to max-
imize the expected media quality at the receiver, given specific au-
thentication overhead and knowledge of network loss rate. System
analysis and experimental results demonstrate that the proposed

  

Source: Apostolopoulos, John - Hewlett Packard Research Labs
Sun, Qibin - Institute for Infocomm Research, Singapore

 

Collections: Computer Technologies and Information Sciences