NDLI: An estimation-theoretic approach to spatially scalable video coding

Content Provider	IEEE Xplore Digital Library
Author	Jingning Han Melkote, V. Rose, K.
Copyright Year	2012
Description	Author affiliation: Department of Electrical and Computer Engineering, University of California Santa Barbara, 93106, USA (Jingning Han; Melkote, V.; Rose, K.)
Abstract	This paper focuses on prediction optimality in spatially scalable video coding. It is inspired by the earlier estimation-theoretic prediction framework developed by our group for quality (SNR) scalability, which achieved optimality by fully accounting for relevant information from the current base layer (e.g., quantization intervals) and the enhancement layer, to efficiently calculate the conditional expectation that forms the optimal predictor. It was central to that approach that all layers reconstruct approximations to the same original transform coefficient. In spatial scalability, however, the layers encode different resolution versions of the signal. To approach optimality in enhancement layer prediction, the current work departs from existing spatially scalable codecs that employ pixel-domain resampling to perform inter-layer prediction. Instead, it incorporates a transform-domain resampling technique that ensures that the base layer quantization intervals are accessible and usable at the enhancement layer, which in conjunction with prior enhancement layer information, enable optimal prediction. Simulations provide experimental evidence that the proposed approach achieves substantial enhancement layer coding gains over the standard.
Starting Page	817
Ending Page	820
File Size	224447
Page Count	4
File Format	PDF
ISBN	9781467300452
ISSN	15206149
e-ISBN	9781467300469
e-ISBN	9781467300445
DOI	10.1109/ICASSP.2012.6288009
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-03-25
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Static VAr compensators Encoding Spatial resolution Discrete cosine transforms Codecs Standards transform domain resampling Spatial scalability scalable video coding estimation-theoretic prediction
Content Type	Text
Resource Type	Article

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