NDLI: Theoretical distortion estimation in L-infinite wavelet-based coding of semi-regular meshes

Content Provider	IEEE Xplore Digital Library
Author	Florea, R. Denis, L. Lievens, J. Schelkens, P. Munteanu, A.
Copyright Year	2012
Description	Author affiliation: Vrije Universiteit Brussel, Department of Electronics and Informatics (ETRO), Pleinlaan 2, 1050 Brussels, Belgium (Florea, R.; Denis, L.; Lievens, J.; Schelkens, P.; Munteanu, A.)
Abstract	Subdivision-based wavelet coding techniques yield state-of-the-art performance in scalable compression of semi-regular meshes. However, all these codecs make use of the L-2 distortion metric, which gives only a good approximation of the global error produced by lossy coding of the wavelet coefficients. The L-infinite metric has been proven to be a suitable metric for applications where controlling the local, maximum error on each vertex is of critical importance. In this context, an upper bound formulation for the L-infinite distortion for a wavelet-based coding scheme operating on semi-regular meshes is derived. In addition, we propose a rate-distortion optimization algorithm that minimizes the rate for any target L-infinite distortion. It is shown that our L-infinite coding system outperforms the state-of-the-art and that an L-2 driven coding approach for semi-regular meshes loses ground to its L-infinite driven version when the goal is to have a tight control on the local reconstruction error.
Starting Page	764
Ending Page	768
File Size	457907
Page Count	5
File Format	PDF
ISBN	9781467310680
ISSN	20761465
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-08-27
Publisher Place	Romania
Access Restriction	Subscribed
Rights Holder	EURASIP
Subject Keyword	Wavelet transforms Measurement Codecs Image coding Subdivision-based wavelets Encoding Semi-regular mesh compression L-infinite coding Approximation methods
Content Type	Text
Resource Type	Article

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