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Dyadic spatial resolution reduction transcoding for H.264/AVC

Jan De Cock, Stijn Notebaert (UGent) , Kenneth Vermeirsch, Peter Lambert (UGent) and Rik Van de Walle (UGent)
(2010) MULTIMEDIA SYSTEMS. 16(2). p.139-149
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Abstract
In this paper, we examine spatial resolution downscaling transcoding for H.264/AVC video coding. A number of advanced coding tools limit the applicability of techniques, which were developed for previous video coding standards. We present a spatial resolution reduction transcoding architecture for H.264/AVC, which extends open-loop transcoding with a low-complexity compensation technique in the reduced-resolution domain. The proposed architecture tackles the problems in H.264/AVC and avoids visual artifacts in the transcoded sequence, while keeping complexity significantly lower than more traditional cascaded decoder-encoder architectures. The refinement step of the proposed architecture can be used to further improve rate-distortion performance, at the cost of additional complexity. In this way, a dynamic-complexity transcoder is rendered possible. We present a thorough investigation of the problems related to motion and residual data mapping, leading to a transcoding solution resulting in fully compliant reduced-size H.264/AVC bitstreams.
Keywords
transcoding, Video Adaptation, Spatial resolution reduction, H.264/AVC, MOTION COMPENSATION, DRIFT, ARCHITECTURES, VIDEO

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Chicago
De Cock, Jan, Stijn Notebaert, Kenneth Vermeirsch, Peter Lambert, and Rik Van de Walle. 2010. “Dyadic Spatial Resolution Reduction Transcoding for H.264/AVC.” Multimedia Systems 16 (2): 139–149.
APA
De Cock, J., Notebaert, S., Vermeirsch, K., Lambert, P., & Van de Walle, R. (2010). Dyadic spatial resolution reduction transcoding for H.264/AVC. MULTIMEDIA SYSTEMS, 16(2), 139–149.
Vancouver
1.
De Cock J, Notebaert S, Vermeirsch K, Lambert P, Van de Walle R. Dyadic spatial resolution reduction transcoding for H.264/AVC. MULTIMEDIA SYSTEMS. 2010;16(2):139–49.
MLA
De Cock, Jan, Stijn Notebaert, Kenneth Vermeirsch, et al. “Dyadic Spatial Resolution Reduction Transcoding for H.264/AVC.” MULTIMEDIA SYSTEMS 16.2 (2010): 139–149. Print.
@article{921844,
  abstract     = {In this paper, we examine spatial resolution downscaling transcoding for H.264/AVC video coding. A number of advanced coding tools limit the applicability of techniques, which were developed for previous video coding standards. We present a spatial resolution reduction transcoding architecture for H.264/AVC, which extends open-loop transcoding with a low-complexity compensation technique in the reduced-resolution domain. The proposed architecture tackles the problems in H.264/AVC and avoids visual artifacts in the transcoded sequence, while keeping complexity significantly lower than more traditional cascaded decoder-encoder architectures. The refinement step of the proposed architecture can be used to further improve rate-distortion performance, at the cost of additional complexity. In this way, a dynamic-complexity transcoder is rendered possible. We present a thorough investigation of the problems related to motion and residual data mapping, leading to a transcoding solution resulting in fully compliant reduced-size H.264/AVC bitstreams.},
  author       = {De Cock, Jan and Notebaert, Stijn and Vermeirsch, Kenneth and Lambert, Peter and Van de Walle, Rik},
  issn         = {0942-4962},
  journal      = {MULTIMEDIA SYSTEMS},
  keyword      = {transcoding,Video Adaptation,Spatial resolution reduction,H.264/AVC,MOTION COMPENSATION,DRIFT,ARCHITECTURES,VIDEO},
  language     = {eng},
  number       = {2},
  pages        = {139--149},
  title        = {Dyadic spatial resolution reduction transcoding for H.264/AVC},
  url          = {http://dx.doi.org/10.1007/s00530-009-0180-2},
  volume       = {16},
  year         = {2010},
}
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