NDLI: Dyadic spatial resolution reduction transcoding for H.264/AVC

Content Provider	Springer Nature Link
Author	De Cock, Jan tebaert, Stijn Vermeirsch, Kenneth Lambert, Peter Van de Walle, Rik
Copyright Year	2010
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.
Starting Page	139
Ending Page	149
Page Count	11
File Format	PDF
ISSN	09424962
Journal	Multimedia Systems
Volume Number	16
Issue Number	2
e-ISSN	14321882
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-01-07
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Video adaptation Transcoding Spatial resolution reduction H.264/AVC Computer Graphics Data Encryption Data Storage Representation Operating Systems Computer Communication Networks Multimedia Information Systems
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Information Systems Media Technology Hardware and Architecture Software

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