Data recovery using improved RVLC in MPEG-4

Sunil Kumar; Liyang Xu

doi:10.1117/12.514465

19 November 2003 Data recovery using improved RVLC in MPEG-4

Sunil Kumar, Liyang Xu

Proceedings Volume 5241, Multimedia Systems and Applications VI; (2003) https://doi.org/10.1117/12.514465
Event: ITCom 2003, 2003, Orlando, Florida, United States

Abstract

In this paper, we present a low-complexity RVLC decoding scheme for MPEG-4 video (including the effect of DC/AC prediction) that recovers more blocks and sometimes more MBs from error propagation region of corrupted video packets, as compared to the MPEG-4 scheme. The remaining blocks and MBs are concealed, by using maximally smooth error concealment scheme. It is shown that the proposed scheme achieves better data recovery, both in terms of PSNR and perceptual quality. In addition, we present more conditions for better error detection than those suggested in MPEG-4, and also discuss properties of error propagation in corrupted video packets. Since the schemes are purely decoder based, the compliance with the standard is fully maintained.

Citation Download Citation

Sunil Kumar and Liyang Xu "Data recovery using improved RVLC in MPEG-4", Proc. SPIE 5241, Multimedia Systems and Applications VI, (19 November 2003); https://doi.org/10.1117/12.514465

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