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Nonlinear Signal and Image Processing 2004

  1. Research Article

    Editorial

    Giovanni L Sicuranza, Gonzalo Arce, Moncef Gabbouj and Stephen Marshall

    EURASIP Journal on Advances in Signal Processing 2004 2004:769682

    Published on: 2 December 2004

  2. Research Article

    Robust Face Image Matching under Illumination Variations

    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...

    Chyuan-Huei Thomas Yang, Shang-Hong Lai and Long-Wen Chang

    EURASIP Journal on Advances in Signal Processing 2004 2004:769050

    Published on: 2 December 2004

  3. Research Article

    Blind Image Deblurring Driven by Nonlinear Processing in the Edge Domain

    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...

    Stefania Colonnese, Patrizio Campisi, Gianpiero Panci and Gaetano Scarano

    EURASIP Journal on Advances in Signal Processing 2004 2004:352184

    Published on: 2 December 2004

  4. Research Article

    A Nonlinear Entropic Variational Model for Image Filtering

    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...

    A. Ben Hamza, Hamid Krim and Josiane Zerubia

    EURASIP Journal on Advances in Signal Processing 2004 2004:540425

    Published on: 2 December 2004

  5. Research Article

    Breakpoint Tuning in DCT-Based Nonlinear Layered Video Codecs

    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...

    Pedro Cuenca, Luis Orozco-Barbosa, Francisco Delicado and Antonio Garrido

    EURASIP Journal on Advances in Signal Processing 2004 2004:846871

    Published on: 2 December 2004

  6. Research Article

    Nonlinear Image Restoration Using a Radial Basis Function Network

    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...

    Keiji Icho, Youji Iiguni and Hajime Maeda

    EURASIP Journal on Advances in Signal Processing 2004 2004:537237

    Published on: 2 December 2004

  7. Research Article

    Hybrid 3D Fractal Coding with Neighbourhood Vector Quantisation

    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...

    Zhen Yao and Roland Wilson

    EURASIP Journal on Advances in Signal Processing 2004 2004:675168

    Published on: 2 December 2004

  8. Research Article

    Time-Frequency Feature Extraction of Newborn EEG Seizure Using SVD-Based Techniques

    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...

    Hamid Hassanpour, Mostefa Mesbah and Boualem Boashash

    EURASIP Journal on Advances in Signal Processing 2004 2004:898124

    Published on: 2 December 2004

  9. Research Article

    Impulsive Noise Suppression from Images with the Noise Exclusive Filter

    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 ...

    Pınar Çivicioğlu, Mustafa Alçı and Erkan Beşdok

    EURASIP Journal on Advances in Signal Processing 2004 2004:181785

    Published on: 2 December 2004

  10. Research Article

    Detail-Preserving Restoration of Impulse Noise Corrupted Images by a Switching Median Filter Guided by a Simple Neuro-Fuzzy Network

    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 ...

    M. Emin Yüksel, Alper Baştürk and Erkan Beşdok

    EURASIP Journal on Advances in Signal Processing 2004 2004:486589

    Published on: 2 December 2004

  11. Research Article

    Training Methods for Image Noise Level Estimation on Wavelet Components

    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)....

    A. De Stefano, P.R. White and W.B. Collis

    EURASIP Journal on Advances in Signal Processing 2004 2004:405209

    Published on: 2 December 2004

  12. Research Article

    Analysis of Minute Features in Speckled Imagery with Maximum Likelihood Estimation

    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...

    Alejandro C. Frery, Francisco Cribari-Neto and Marcelo O. de Souza

    EURASIP Journal on Advances in Signal Processing 2004 2004:375370

    Published on: 2 December 2004

  13. Research Article

    Modified Kernel Functions by Geodesic Distance

    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 ...

    Quan Yong and Yang Jie

    EURASIP Journal on Advances in Signal Processing 2004 2004:139240

    Published on: 2 December 2004

  14. Research Article

    Editorial

    Gian Luca Foresti, Giovanni Ramponi, Carlo Regazzoni, Giovanni L. Sicuranza and Gianni Vernazza

    EURASIP Journal on Advances in Signal Processing 2004 2004:476323

    Published on: 29 September 2004

  15. Research Article

    Stochastic Modeling of the Spatiotemporal Wavelet Coefficients and Applications to Quality Enhancement and Error Concealment

    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 ...

    Georgia Feideropoulou and Béatrice Pesquet-Popescu

    EURASIP Journal on Advances in Signal Processing 2004 2004:402678

    Published on: 29 September 2004

  16. Research Article

    Flat Zone Analysis and a Sharpening Operation for Gradual Transition Detection on Video Images

    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...

    Silvio J.F. Guimarães, Neucimar J. Leite, Michel Couprie and Arnaldo de A. Araújo

    EURASIP Journal on Advances in Signal Processing 2004 2004:578032

    Published on: 29 September 2004

  17. Research Article

    A Maximum Likelihood Approach to Least Absolute Deviation Regression

    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...

    Yinbo Li and Gonzalo R. Arce

    EURASIP Journal on Advances in Signal Processing 2004 2004:948982

    Published on: 29 September 2004

  18. Research Article

    Design of Farthest-Point Masks for Image Halftoning

    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...

    R. Shahidi, C. Moloney and G. Ramponi

    EURASIP Journal on Advances in Signal Processing 2004 2004:143458

    Published on: 29 September 2004

  19. Research Article

    Diagonal Kernel Point Estimation of http://static-content.springer.com/image/art%3A10.1155%2FS1110865704403011/MediaObjects/13634_2003_Article_1081_IEq1_HTML.gif th-Order Discrete Volterra-Wiener Systems

    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 ...

    Massimiliano Pirani, Simone Orcioni and Claudio Turchetti

    EURASIP Journal on Advances in Signal Processing 2004 2004:145457

    Published on: 29 September 2004

  20. Research Article

    Automatic Image Enhancement by Content Dependent Exposure Correction

    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...

    S. Battiato, A. Bosco, A. Castorina and G. Messina

    EURASIP Journal on Advances in Signal Processing 2004 2004:613282

    Published on: 29 September 2004

  21. Research Article

    Generalized Selection Weighted Vector Filters

    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 ...

    Rastislav Lukac, Konstantinos N. Plataniotis, Bogdan Smolka and Anastasios N. Venetsanopoulos

    EURASIP Journal on Advances in Signal Processing 2004 2004:347160

    Published on: 29 September 2004

  22. Research Article

    Nonlinear Transformation of Differential Equations into Phase Space

    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 ...

    Leon Cohen and Lorenzo Galleani

    EURASIP Journal on Advances in Signal Processing 2004 2004:903519

    Published on: 29 September 2004

  23. Research Article

    Adaptive Window Zero-Crossing-Based Instantaneous Frequency Estimation

    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...

    S. Chandra Sekhar and TV Sreenivas

    EURASIP Journal on Advances in Signal Processing 2004 2004:249858

    Published on: 29 September 2004

  24. Research Article

    Design of a Low-Power VLSI Macrocell for Nonlinear Adaptive Video Noise Reduction

    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...

    Sergio Saponara, Luca Fanucci and Pierangelo Terreni

    EURASIP Journal on Advances in Signal Processing 2004 2004:695803

    Published on: 29 September 2004

  25. Research Article

    Algorithms for Hardware-Based Pattern Recognition

    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...

    Volker Lohweg, Carsten Diederichs and Dietmar Müller

    EURASIP Journal on Advances in Signal Processing 2004 2004:642357

    Published on: 29 September 2004

  26. Research Article

    Quality Evaluation and Nonuniform Compression of Geometrically Distorted Images Using the Quadtree Distortion Map

    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...

    Cristina Costa, Francesco G.B. De Natale and Fabrizio Granelli

    EURASIP Journal on Advances in Signal Processing 2004 2004:470826

    Published on: 29 September 2004

  27. Research Article

    Use of Time-Frequency Analysis and Neural Networks for Mode Identification in a Wireless Software-Defined Radio Approach

    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...

    Matteo Gandetto, Marco Guainazzo and Carlo S. Regazzoni

    EURASIP Journal on Advances in Signal Processing 2004 2004:863653

    Published on: 29 September 2004

  28. Research Article

    Piecewise Linear Model-Based Image Enhancement

    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...

    Fabrizio Russo

    EURASIP Journal on Advances in Signal Processing 2004 2004:983173

    Published on: 29 September 2004

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