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A Coordinated Multiple Description Scalar Quantizer and Error Concealment Algorithm for Error Resilient Video Streaming over Lossy Channels
 

Summary: A Coordinated Multiple Description Scalar Quantizer and Error Concealment
Algorithm for Error Resilient Video Streaming over Lossy Channels
Yen-Chi Lee, Yucel Altunbasak, and Russell M. Mersereau
School of Electrical and Computer Engineering
Georgia Institute of Technology
Atlanta, Georgia 30332-0250
Abstract--Historically, multiple description coding (MDC) and
post-processing error concealment (ECN) algorithms for video
have evolved separately. Although multiple description coding
provides a way to make the video quality degrade gracefully in
the presence of packet losses, the resulting quality may be unsat-
isfactory when only one description is used to reconstruct the sig-
nal. This paper proposes a coordinated application of multiple de-
scription scalar quantizer (MDSQ) and error concealment, where
the smoothness of the video signal helps to compensate for the loss
of descriptions. This joint optimization results in significant im-
provements in reconstructed video quality over independent use
of MDSQ.
I. INTRODUCTION
The rapid growth in the number of mobile phones and Inter-

  

Source: Altunbasak, Yucel - School of Electrical and Computer Engineering, Georgia Institute of Technology

 

Collections: Engineering