Title :
Content adaptive gop size control with feedback channel suppression in distributed video coding
Author :
Yaacoub, Charles ; Farah, Joumana ; Pesquet-Popescu, Béatrice
Author_Institution :
Fac. of Sci. & Comput. Eng., Holy-Spirit Univ. of Kaslik, Jounieh, Lebanon
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.
Keywords :
adaptive control; data compression; feedback; image sequences; video coding; H.264 intra-coding; Wyner-Ziv coding modes; automatic mode selection; content adaptive GOP size control; distributed video coding; feedback channel suppression; group of pictures size control; video sequence; Adaptive control; Bit rate; Codecs; Decoding; Feedback; Programmable control; Size control; Switches; System performance; Video coding; GOP size control; Video; Wyner-Ziv; distributed compression; return channel;
Conference_Titel :
Image Processing (ICIP), 2009 16th IEEE International Conference on
Conference_Location :
Cairo
Print_ISBN :
978-1-4244-5653-6
Electronic_ISBN :
1522-4880
DOI :
10.1109/ICIP.2009.5413513
