Title: A new unequal error protection scheme based on FMO
Authors: Shih, Jhong-Yu
Tsai, Wen-Jiin
資訊工程學系
Department of Computer Science
Keywords: Unequal error protection;UEP;Flexible macroblock ordering;FMO;Converged motion estimation;Error resilience
Issue Date: 1-May-2010
Abstract: This paper presents a novel scheme for video transmission over error-prone networks. The proposed scheme exploits the error resilient features of H.264/AVC and employs an unequal error protection (UEP) approach to protect effectively the streams. A novel algorithm is proposed to classify macroblocks into slice groups using the explicit mode of Flexible Macroblock Ordering (FMO). A rate distortion optimized algorithm is used to assign unequal amounts of FEC protection to the resulting slice groups according to their importance. In addition, a Converged Motion Estimation (CME) is proposed to further improve the proposed UEP scheme. The idea behind the CME is to make the macroblocks be referenced in a skewed manner, such that highly important macroblocks are converged on only a few and the use of redundancy for error protection is efficient. Simulation results show the superiority of the proposed method over other approaches for transmission of H.264/AVC streams.
URI: http://dx.doi.org/10.1007/s11042-009-0333-5
http://hdl.handle.net/11536/5495
ISSN: 1380-7501
DOI: 10.1007/s11042-009-0333-5
Journal: MULTIMEDIA TOOLS AND APPLICATIONS
Volume: 47
Issue: 3
Begin Page: 461
End Page: 476
Appears in Collections:Articles


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