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Your search keyword '"da Silva, Eduardo A. B."' showing total 35 results
Start Over Author "da Silva, Eduardo A. B." Publication Type Books
35 results on '"da Silva, Eduardo A. B."'

3. References

Author

Diniz, Paulo S. R., primary, da Silva, Eduardo A. B., additional, and Netto, Sergio L., additional

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7. References

Author

Diniz, Paulo S. R., primary, da Silva, Eduardo A. B., additional, and Netto, Sergio L., additional

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13. Preface

Author

Silva, Eduardo A. B. Da, primary, Diniz, Paulo S. R., additional, da Silva, Eduardo A. B., additional, and Netto, Sergio L., additional

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26. Filter banks

Author

Diniz, Paulo S. R., primary, da Silva, Eduardo A. B., additional, and Netto, Sergio L., additional

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27. Preface

Author

Diniz, Paulo S. R., primary, da Silva, Eduardo A. B., additional, and Netto, Sergio L., additional

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31. Introduction

Author

Diniz, Paulo S. R., primary, da Silva, Eduardo A. B., additional, and Netto, Sergio L., additional

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32. Introduction

Author

Diniz, Paulo S. R., primary, da Silva, Eduardo A. B., additional, and Netto, Sergio L., additional

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34. Improving Multiscale Recurrent Pattern Image Coding with Deblocking Filtering.

Author

Rodrigues, Nuno M. M., da Silva, Eduardo A. B., de Carvalho, Murilo B., de Faria, Sérgio M. M., and da Silva, Vitor M. M.

Abstract

The Multidimensional Multiscale Parser (MMP) algorithm is an image encoder that approximates the image blocks by using recurrent patterns, from an adaptive dictionary, at different scales. This encoder performs well for a large range of image data. However, images encoded with MMP suffer from blocking artifacts. This paper presents the design of a deblocking filter that improves the performance the MMP. We present the results of our research, that aims to increase the performance of MMP, particularly for smooth images, without causing quality losses for other image types, where its performance is already up to 5 dB better than that of top transform based encoders. For smooth images, the proposed filter introduces relevant perceptual quality gains by efficiently eliminating the blocking effects, without introducing the usual blurring artifacts. Besides this, we show that, unlike traditional deblocking algorithms, the proposed method also improves the objective quality of the decoded image, achieving PSNR gains of up to about 0.3 dB. With such gains, MMP reaches an almost equivalent performance to that of the state-of-the-art image encoders (equal to that of JPEG2000 for higher compression ratios), for smooth images, while maintaining its gains for non-smooth images. In fact, for all image types, the proposed method provides significant perceptual improvements, without sacrificing the PSNR performance. [ABSTRACT FROM AUTHOR]

Published
2008
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35. TIME-VARYING FILTERS.

Author

da Silva, Eduardo A. B. and Paulo S. R. Diniz

Subjects
ELECTRIC filters, ELECTRIC circuits, FUNCTIONAL analysis, CALCULUS of variations, FUNCTIONAL equations, ELECTRONICS
Abstract

The article presents information on time-varying filters. They are generally referred to as multirate systems. Most of them have one property in common. They are not shift invariant or they are, at most, periodically shift invariant. They are a relatively recent development of functional analysis that is arousing great interest in the signal processing community, and their digital implementation can be regarded as a special case of critically decimated filter banks.

Published
1999

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