Content adaptive GOP size control with feedback channel suppression in distributed video coding

Authors:
Charles Yaacoub;Joumana Farah;Béatrice Pesquet-Popescu
Affiliations:
Faculty of Sciences and Computer Engineering, Holy-Spirit University of Kaslik, Jounieh, Lebanon and Signal and Image Processing Dept., Télécom ParisTech, Paris, France;Faculty of Sciences and Computer Engineering, Holy-Spirit University of Kaslik, Jounieh, Lebanon;Signal and Image Processing Dept., Télécom ParisTech, Paris, France
Venue:
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Year:
2009

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Abstract

This paper presents a novel algorithm for content adaptive GOP size control in distributed video coding. The GOP size is dynamically varied along the sequence, depending on motion activity. Automatic mode selection allows the system to switch between H.264 intra-coding and Wyner-Ziv coding modes to optimize the overall performance. Furthermore, the encoder determines a suitable compression ratio for the Wyner-Ziv frames without the need for a feedback channel. Simulation results show significant improvement in the average system performance, compared to fixed GOP Wyner-Ziv and H.264 intra-coding.