A coordinated multiple description scalar quantizer and error concealment algorithm for error resilient video streaming over lossy channels

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 unsatisfactory when only one description is used to reconstruct the signal. This paper proposes a coordinated application of multiple description 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 improvements in reconstructed video quality over independent use of MDSQ.