With the ubiquitous application of Internet and wireless networks, H.264 video communication becomes more and more popular. However, due to the high-efficiently predictive coding and the variable length entropy coding, it is more sensitive to transmission errors. Error concealment (EC) is just an approach to utilize the spatial and temporal correlations to conceal the corrupted region. In this paper, first we propose variable block size error concealment (VBSEC) scheme inspired by variable block size motion estimation (VBSME) in H.264. This scheme provides four EC modes and four sub-block partitions. The whole corrupted macro-block (MB) will be divided into variable block size adaptively according to the actual motion. More precise motion vectors (MV) will be predicted for each sub-block. Then MV refinement (MVR) scheme is proposed to refine the MV of the heterogeneous sub-block by utilizing three step search (TSS) algorithm adaptively. Both VBSEC and MVR are based on our improved spatio-temporal boundary matching algorithm (STBMA). By utilizing these schemes, we can reconstruct the corrupted MB in the inter frame moreaccurately. The experimental results show that our proposed scheme can obtain maximum PSNR gain up to 1.82dB and 1.52dB, respectively compared with the boundary matching algorithm (BMA) adopted in the JM11.0 reference software and STBMA.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Adaptive Motion Vector Retrieval Schemes for H.264 Error Concealment


    Beteiligte:
    Wang, Lei (Autor:in) / Wang, Jun (Autor:in) / Goto, Satoshi (Autor:in) / Ikenaga, Takeshi (Autor:in)


    Erscheinungsdatum :

    01.05.2008


    Format / Umfang :

    346528 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Error Concealment for Motion JPEG2000

    Atzori, L. / Bilgin, A. / Marcellin, M. W. | British Library Conference Proceedings | 2005


    Error concealment for motion JPEG2000

    Atzori, L. / Bilgin, A. / Marcellin, M.W. | IEEE | 2005


    Error concealment using multiresolution motion estimation [2597-38]

    Tsai, A. / Wiener, S. / Wilder, J. et al. | British Library Conference Proceedings | 1995


    Directional error-concealment technique for intracoded video frames

    Navathe, B. / Merchant, S. N. | British Library Online Contents | 2006


    A New Temporal Error Concealment Method for H.264 using Adaptive Block Sizes

    Kim, D. / Yang, S. / Jeong, J. | British Library Conference Proceedings | 2005