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Nonlinear Signal and Image Processing 2004

  1. The nonstationary and multicomponent nature of newborn EEG seizures tends to increase the complexity of the seizure detection problem. In dealing with this type of problems, time-frequency-based techniques wer...

    Authors: Hamid Hassanpour, Mostefa Mesbah and Boualem Boashash
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:898124
  2. Many studies have been conducted to evaluate the benefits of using layered video coding schemes as a means to improve the robustness of video communications systems. In this paper, we study a frame-aware nonli...

    Authors: Pedro Cuenca, Luis Orozco-Barbosa, Francisco Delicado and Antonio Garrido
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:846871
  3. This paper introduces adaptive fuzzy equalizers with variable step size for broadband power line (PL) communications. Based on delta-bar-delta and local Lipschitz estimation updating rules, feedforward, and de...

    Authors: Moisés V Ribeiro
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:824326
  4. Authors: Giovanni L Sicuranza, Gonzalo Arce, Moncef Gabbouj and Stephen Marshall
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:769682
  5. Face image matching is an essential step for face recognition and face verification. It is difficult to achieve robust face matching under various image acquisition conditions. In this paper, a novel face imag...

    Authors: Chyuan-Huei Thomas Yang, Shang-Hong Lai and Long-Wen Chang
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:769050
  6. A hybrid 3D compression scheme which combines fractal coding with neighbourhood vector quantisation for video and volume data is reported. While fractal coding exploits the redundancy present in different scal...

    Authors: Zhen Yao and Roland Wilson
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:675168
  7. We propose a new approach to reduce speckle noise and enhance structures in speckle-corrupted images. It utilizes a median-anisotropic diffusion compound scheme. The median-filter-based reaction term acts as a...

    Authors: Zhi Yang and Martin D. Fox
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:615075
  8. We propose an information-theoretic variational filter for image denoising. It is a result of minimizing a functional subject to some noise constraints, and takes a hybrid form of a negentropy variational inte...

    Authors: A. Ben Hamza, Hamid Krim and Josiane Zerubia
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:540425
  9. We propose a nonlinear image restoration method that uses the generalized radial basis function network (GRBFN) and a regularization method. The GRBFN is used to estimate the nonlinear blurring function. The r...

    Authors: Keiji Icho, Youji Iiguni and Hajime Maeda
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:537237
  10. A new operator for the restoration of digital images corrupted by impulse noise is presented. The proposed operator is a simple recursive switching median filter guided by a neuro-fuzzy network functioning as ...

    Authors: M. Emin Yüksel, Alper Baştürk and Erkan Beşdok
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:486589
  11. The estimation of the standard deviation of noise contaminating an image is a fundamental step in wavelet-based noise reduction techniques. The method widely used is based on the mean absolute deviation (MAD)....

    Authors: A. De Stefano, P.R. White and W.B. Collis
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:405209
  12. This paper deals with the statistical analysis of the behavior of a blind robust watermarking system based on pseudorandom signals embedded in the magnitude of the Fourier transform of the host data. The host ...

    Authors: Vassilios Solachidis and Ioannis Pitas
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:402942
  13. The paper proposes a maximum likelihood sequence estimator (MLSE) receiver for satellite communications. The satellite channel model is composed of a nonlinear traveling wave tube (TWT) amplifier followed by a...

    Authors: Mohamed Ibnkahla and Jun Yuan
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:394715
  14. This paper deals with numerical problems arising when performing maximum likelihood parameter estimation in speckled imagery using small samples. The noise that appears in images obtained with coherent illumin...

    Authors: Alejandro C. Frery, Francisco Cribari-Neto and Marcelo O. de Souza
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:375370
  15. This work addresses the problem of blind image deblurring, that is, of recovering an original image observed through one or more unknown linear channels and corrupted by additive noise. We resort to an iterati...

    Authors: Stefania Colonnese, Patrizio Campisi, Gianpiero Panci and Gaetano Scarano
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:352184
  16. A novel impulsive noise elimination filter, entitled noise exclusive filter (NEF), which shows a high performance at the restoration of images distorted by impulsive noise, is proposed in this paper. NEF uses ...

    Authors: Pınar Çivicioğlu, Mustafa Alçı and Erkan Beşdok
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:181785
  17. When dealing with pattern recognition problems one encounters different types of prior knowledge. It is important to incorporate such knowledge into the classification method at hand. A common prior knowledge ...

    Authors: Quan Yong and Yang Jie
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:139240
  18. A novel technique for the sharpening of noisy images is presented. The proposed enhancement system adopts a simple piecewise linear (PWL) function in order to sharpen the image edges and to reduce the noise. S...

    Authors: Fabrizio Russo
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:983173
  19. Least absolute deviation (LAD) regression is an important tool used in numerous applications throughout science and engineering, mainly due to the intrinsic robust characteristics of LAD. In this paper, we sho...

    Authors: Yinbo Li and Gonzalo R. Arce
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:948982
  20. Time-frequency representations transform a one-dimensional function into a two-dimensional function in the phase-space of time and frequency. The transformation to accomplish is a nonlinear transformation and ...

    Authors: Leon Cohen and Lorenzo Galleani
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:903519
  21. The use of time-frequency distributions is proposed as a nonlinear signal processing technique that is combined with a pattern recognition approach to identify superimposed transmission modes in a reconfigurab...

    Authors: Matteo Gandetto, Marco Guainazzo and Carlo S. Regazzoni
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:863653
  22. A VLSI macrocell for edge-preserving video noise reduction is proposed in the paper. It is based on a nonlinear rational filter enhanced by a noise estimator for blind and dynamic adaptation of the filtering p...

    Authors: Sergio Saponara, Luca Fanucci and Pierangelo Terreni
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:695803
  23. In linear system identification, optimal excitation signals can be determined using the Cramer-Rao bound. This problem has not been thoroughly studied for the nonlinear case. In this work, the Cramer-Rao bound...

    Authors: H. Koeppl, A.S. Josan, G. Paoli and G. Kubin
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:642938
  24. Nonlinear spatial transforms and fuzzy pattern classification with unimodal potential functions are established in signal processing. They have proved to be excellent tools in feature extraction and classifica...

    Authors: Volker Lohweg, Carsten Diederichs and Dietmar Müller
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:642357
  25. We describe an automatic image enhancement technique based on features extraction methods. The approach takes into account images in Bayer data format, captured using a CCD/CMOS sensor and/or 24-bit color imag...

    Authors: S. Battiato, A. Bosco, A. Castorina and G. Messina
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:613282
  26. We consider the use of adaptive Volterra filters, implemented in the form of multichannel filter banks, as nonlinear active noise controllers. In particular, we discuss the derivation of filtered-X affine proj...

    Authors: Alberto Carini and Giovanni L. Sicuranza
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:610653
  27. The boundary identification represents an interesting and difficult problem in image processing, mainly if two flat zones are separated by a gradual transition. The most common edge detection operators work pr...

    Authors: Silvio J.F. Guimarães, Neucimar J. Leite, Michel Couprie and Arnaldo de A. Araújo
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:578032
  28. Authors: Gian Luca Foresti, Giovanni Ramponi, Carlo Regazzoni, Giovanni L. Sicuranza and Gianni Vernazza
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:476323
  29. The paper presents an analysis of the effects of lossy compression algorithms applied to images affected by geometrical distortion. It will be shown that the encoding-decoding process results in a nonhomogeneo...

    Authors: Cristina Costa, Francesco G.B. De Natale and Fabrizio Granelli
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:470826
  30. We extend a stochastic model of hierarchical dependencies between wavelet coefficients of still images to the spatiotemporal decomposition of video sequences, obtained by a motion-compensated ...

    Authors: Georgia Feideropoulou and Béatrice Pesquet-Popescu
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:402678
  31. This paper introduces a class of nonlinear multichannel filters capable of removing impulsive noise in color images. The here-proposed generalized selection weighted vector filter class constitutes a powerful ...

    Authors: Rastislav Lukac, Konstantinos N. Plataniotis, Bogdan Smolka and Anastasios N. Venetsanopoulos
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:347160
  32. The majority of the nonlinearity in a communication system is attributed to the power amplifier (PA) present at the final stage of the transmitter chain. In this paper, we consider Gaussian distributed input s...

    Authors: G. Tong Zhou and Raviv Raich
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:256395
  33. We address the problem of estimating instantaneous frequency (IF) of a real-valued constant amplitude time-varying sinusoid. Estimation of polynomial IF is formulated using the zero-crossings of the signal. We...

    Authors: S. Chandra Sekhar and TV Sreenivas
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:249858
  34. The estimation of diagonal elements of a Wiener model kernel is a well-known problem. The new operators and notations proposed here aim at the implementation of efficient and accurate nonparametric algorithms ...

    Authors: Massimiliano Pirani, Simone Orcioni and Claudio Turchetti
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:145457
  35. In an earlier paper, we briefly presented a new halftoning algorithm called farthest-point halftoning. In the present paper, this method is analyzed in detail, and a novel dispersion measure is defined to impr...

    Authors: R. Shahidi, C. Moloney and G. Ramponi
    Citation: EURASIP Journal on Advances in Signal Processing 2004 2004:143458