A Two-stage Approach for Robust HEVC Coding and Streaming.pdf (554.05 kB)
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A two-stage approach for robust HEVC coding and streaming

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posted on 21.04.2017, 11:11 by Joao Carreira, Pedro A.A. Assuncao, Sergio M.M. Faria, Erhan EkmekciogluErhan Ekmekcioglu, Ahmet KondozAhmet Kondoz
The increased compression ratios achieved by the High Efficiency Video Coding (HEVC) standard lead to reduced robustness of coded streams, with increased susceptibility to network errors and consequent video quality degradation. This paper proposes a method based on a two-stage approach to improve the error robustness of HEVC streaming, by reducing temporal error propagation in case of frame loss. The prediction mismatch that occurs at the decoder after frame loss is reduced through the following two stages: (i) at the encoding stage, the reference pictures are dynamically selected based on constraining conditions and Lagrangian optimisation, which distributes the use of reference pictures, by reducing the number of prediction units (PUs) that depend on a single reference; (ii) at the streaming stage, a motion vector (MV) prioritisation algorithm, based on spatial dependencies, selects an optimal sub-set of MVs to be transmitted, redundantly, as side information to reduce mismatched MV predictions at the decoder. The simulation results show that the proposed method significantly reduces the effect of temporal error propagation. Compared to the reference HEVC, the proposed reference picture selection method is able to improve the video quality at low packet loss rates (e.g., 1%) using the same bitrate, achieving quality gains up to 2.3 dB for 10% of packet loss ratio. It is shown, for instance, that the redundant MVs are able to boost the performance achieving quality gains of 3 dB when compared to the reference HEVC, at the cost using 4% increase in total bitrate.

Funding

This work was supported by the Fundacao para a Ciencia e a Tecnologia (FCT), PhD Grant SFRH/BD/86368/2012, Project UID/EEA/50008/2013 and COST Action IC1105 (3D-ConTourNet).

History

School

  • Loughborough University London

Published in

IEEE Transactions on Circuits and Systems for Video Technology

Volume

28

Issue

8

Pages

1960 - 1973

Citation

CARREIRA, J.F.M. ... et al, 2018. A two-stage approach for robust HEVC coding and streaming. IEEE Transactions on Circuits and Systems for Video Technology, 28(8), pp. 1960-1973.

Publisher

© IEEE

Version

AM (Accepted Manuscript)

Acceptance date

26/03/2017

Publication date

2017-04-06

Notes

© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

ISSN

1051-8215

eISSN

1558-2205

Language

en