Polyphase spatial subsampling multiple description coding of video streams with H264

• Published in: 2004 International Conference on Image Processing, 2004. ICIP '04 Vol. 5; pp. 3213 - 3216 Vol. 5
• Main Authors: Bernardini, R., Durigon, M., Rinaldo, R., Celetto, L., Vitali, A.
• Format: Conference Proceeding
• Language: English
• Published: Piscataway NJ IEEE 2004
• Subjects: Applied sciences; Artificial intelligence; Automatic voltage control; Computer science; control theory; systems; Decoding; Error correction; Exact sciences and technology; Multimedia systems; Pattern recognition. Digital image processing. Computational geometry; Real time systems; Robustness; Streaming media; Video coding; Video compression; Visual effects; Video coding; Image coding; Image processing; Coding errors; Multiple system; Robustness; Buffer system
• ISBN: 0780385543; 9780780385542
• ISSN: 1522-4880; 2381-8549
• DOI: 10.1109/ICIP.2004.1421797

In this work, we propose a multiple description (MD) coding system for video streams. In particular, our scheme originates four descriptions from the spatially downsampled polyphase components of the original frames. Each description is compressed independently with the recent H264/AVC video coding standard, it is packetized and sent over an error prone network. In case of errors in one or more descriptions, appropriate concealing is applied at the receiver, before insertion of the corrected frames into the corresponding receiver frame buffers. We propose and compare different concealment solutions and a post processing stage to attenuate visual effects related to MD coding. We analyze the trade off between robustness to channel errors and coding efficiency, comparing the proposed technique with single description (SD) video coding with H264/AVC. Experimental results validate the effectiveness of the proposed scheme.