ROBUST VIDEO TRANSMISSION USING H.264 AND REAL-VALUED BCH FRAMES (MA-L3)

Author(s) : Azza Ouled Zaid (LSS laboratory, France) Michel Kieffer (LSS laboratory, France) Chang-Ming Lee (LSS laboratory, France) Pierre Duhamel (LSS laboratory, France)

Abstract : With the increasing use of multimedia technologies, video coding requires higher performances as well as new features. To address this need, the latest ITU-T video coding standard, H.264, has been developed. The motion compensation algorithm is the key of the improvements over H.263+. This paper proposes an H264-based algorithm which does not require the motion vectors to be transmitted. It extends previous results obtained in the H263+ context. The main purpose of this work is to check whether our procedure of reestimating the motion vectors at the receiver is compatible with the initial H264 scheme efficiency. It is shown that this property is obtained at some cost in terms of bit rate for comparable PSNRs, but that our new H264-based scheme has about the same performance level as the plain H263+ coder. This is essentially a preliminary work, which shows that the most sensitive part of the bit stream can be removed, thus allowing new robust coders to be developed.

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