NDLI: Improving multiscale recurrent pattern image coding with enhanced dictionary updating strategies

Content Provider	IEEE Xplore Digital Library
Author	Rodrigues, N.M.M. da Silva, E.A.B. de Carvalho, M.B. de Faria, S.M.M. da Silva, V.M.M.
Copyright Year	2006
Description	Author affiliation: Inst. Politecnico de Leiria (ESTG), Leiria (Rodrigues, N.M.M.)
Abstract	The multidimensional multiscale parser (MMP) is a lossy multidimensional signal encoder, that uses an adaptive dictionary for approximating the original signal using multiscale recurrent pattern matching. In previous work we have shown the efficiency of MMP for image coding and we have also described new techniques to improve its performance, using predictive coding (MMP-Intra) and innovative strategies for reducing the dictionary redundancy. The combination of these methods for image coding achieves much better results than the state-of-the-art JPEG2000 and H.264/AVC Intra image encoders for text and compound images, but for smooth natural images it still presents small losses. In this work we present a new technique to improve the dictionary adaptation process of the MMP-Intra, based on enhanced updating techniques. Experimental results have showed that, when combined with dictionary growth control methods, this technique achieves consistent image quality gains for all image types. Furthermore we present some methods that eliminate the intrinsic substantial increase of the computational complexity associated with more rapidly growing dictionaries, without compromising the final quality of the decoded image.
Starting Page	257
Ending Page	262
File Size	652085
Page Count	6
File Format	PDF
ISBN	9788589748049
DOI	10.1109/ITS.2006.4433280
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-09-03
Publisher Place	Brazil
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image coding Dictionaries Multidimensional systems Automatic voltage control Pattern matching Predictive coding Computational complexity Decoding Performance gain Image quality image coding Multidimensional Multiscale Parser MMP-Intra multiscale recurrent pattern matching adaptive dictionary
Content Type	Text
Resource Type	Article

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