We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Dyadic spatial resolution reduction transcoding for H.264/AVC.
- Authors
De Cock, Jan; Notebaert, Stijn; Vermeirsch, Kenneth; Lambert, Peter; Van de Walle, Rik
- 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.
- Subjects
CAMCORDERS; SIGNAL theory; DIGITAL electronics; COMPUTER programming; INFORMATION theory; VIDEO recording; CODING theory; DIGITAL communications; BROADCAST data systems; ELECTRONIC systems
- Publication
Multimedia Systems, 2010, Vol 16, Issue 2, p139
- ISSN
0942-4962
- Publication type
Article
- DOI
10.1007/s00530-009-0180-2