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ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.

Date 15-17 Sept. 2005

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  • Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis (IEEE Cat. No. 05EX1094)

    Publication Year: 2005
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  • ISPA 2005 - Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis [Title]

    Publication Year: 2005, Page(s): i
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  • Copyright

    Publication Year: 2005, Page(s): ii
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  • Preface

    Publication Year: 2005, Page(s): iii
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  • ISPA 2005 Committee

    Publication Year: 2005, Page(s):iv - v
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  • Table of contents

    Publication Year: 2005, Page(s):vii - xiv
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  • Human tracking by mode seeking

    Publication Year: 2005, Page(s):1 - 6
    Cited by:  Papers (8)  |  Patents (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (733 KB) | HTML iconHTML

    Change detection by background subtraction is a common approach to detect moving foreground. The resulting difference image is usually thresholded to obtain objects based on pixel connectedness and resulting blob objects are subsequently tracked. This paper proposes a detection approach not requiring the binarization of the difference image. Local density maxima in the difference image - usually r... View full abstract»

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  • Fingerprint classification using a homogeneity structure of fingerprint's orientation field and neural net

    Publication Year: 2005, Page(s):7 - 11
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (407 KB) | HTML iconHTML

    Fingerprint classification is important part of fingerprint identification systems that work on large databases. It provides fingerprint indexing, which results in efficient matching. This work presents usage of a homogeneity structure of fingerprint's orientation field for fingerprint indexing. The homogeneity structure is described through a quad-tree structure. A description of the quad-tree st... View full abstract»

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  • A biometric verification system based on the fusion of palmprint and face features

    Publication Year: 2005, Page(s):12 - 17
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (433 KB) | HTML iconHTML

    This paper presents a bimodal biometric verification system for physical access control based on the features of the palmprint and the face. The system tries to improve the verification results of unimodal biometric systems based on palmprint or facial features by integrating them using fusion at the matching-score level. The verification process consists of image acquisition using a scanner and a... View full abstract»

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  • Multiple faces tracking using local statistics

    Publication Year: 2005, Page(s):18 - 23
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (611 KB) | HTML iconHTML

    Our project is to design algorithms to count people in vehicles such as buses from surveillance cameras' video streams. This article presents a method of detection and tracking of multiple faces in a video by using a model of first and second order local moments. The three essential steps of our system are the skin color modeling, the probabilistic shape model and Bayesian decision, and the tracki... View full abstract»

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  • Fusion of multiple detectors for face and eyes localization

    Publication Year: 2005, Page(s):24 - 29
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (737 KB) | HTML iconHTML

    We present a new method dedicated to the localization of faces and eyes in color images. It combines different experts. A linear combination of three models (a connexionist model, an ellipse model, and a skin color model) is used for face localization. A product fusion of an eye model (Chinese transform) and a color model (modified GMM) find coarsely the eyes location. Then an "AND " operation bet... View full abstract»

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  • Face image validation system

    Publication Year: 2005, Page(s):30 - 33
    Cited by:  Papers (14)  |  Patents (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (405 KB) | HTML iconHTML

    In this paper, we present a novel face image validation system. The purpose of the system is to evaluate quality of face images for identification documents and to detect face images that do not satisfy the image quality requirements. To determine image quality the system first performs face detection in order to find facial features and determine image background. The system consists of seventeen... View full abstract»

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  • L2-density estimation with negative kernels

    Publication Year: 2005, Page(s):34 - 39
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (580 KB) | HTML iconHTML

    In this paper, we are interested in density estimation using kernels that can take negative values, also called negative kernels. On the one hand, using negative kernels allows reducing the bias of the approximation, but on the other hand it implies that the resulting approximation can take negative values. To obtain a new approximation which is a probability density, we propose to replace the app... View full abstract»

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  • A review of recent results in multiple target tracking

    Publication Year: 2005, Page(s):40 - 45
    Cited by:  Papers (6)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (878 KB) | HTML iconHTML

    In this paper, we present a simulation-based method for multitarget tracking and detection using sequential Monte Carlo (SMC), or particle filtering (PF) methods. The proposed approach is applicable to nonlinear and non-Gaussian models for the target dynamics and measurement likelihood, where the environment is characterised by high clutter rate and low detection probability. The number of targets... View full abstract»

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  • Novel particle filtering algorithms for fixed parameter estimation in dynamic systems

    Publication Year: 2005, Page(s):46 - 51
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (557 KB) | HTML iconHTML

    Standard particle filters cannot handle dynamic systems with unknown fixed parameters. In this paper, we extend the recently proposed cost-reference particle filtering methodology (CRPF) to jointly estimate the time-varying state and the static parameters of a dynamic system. In particular, we introduce three strategies that allow assigning costs to the random samples in the state-space independen... View full abstract»

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  • Data reduction for particle filters

    Publication Year: 2005, Page(s):52 - 57
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (487 KB) | HTML iconHTML

    In this paper, we are interested in nonlinear filtering approximations. Approximate filters (such as the extended Kalman filter or particle filters) are known to converge to the optimal filter when the local error (committed at each step of time) vanishes. But this convergence is in general not uniform in time. Error bounds obtained in the general case suggest that the approximation error could gr... View full abstract»

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  • On using likelihood-adjusted proposals in particle filtering: local importance sampling

    Publication Year: 2005, Page(s):58 - 63
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (503 KB) | HTML iconHTML

    An unsatisfactory property of particle filters is that they may become inefficient when the observation noise is low. In this paper we consider a simple-to-implement particle filter, called 'LIS-based particle filter', whose aim is to overcome the above mentioned weakness. LIS-based particle filters sample the particles in a two-stage process that uses information of the most recent observation, t... View full abstract»

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  • Comparison of resampling schemes for particle filtering

    Publication Year: 2005, Page(s):64 - 69
    Cited by:  Papers (104)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (453 KB) | HTML iconHTML

    This contribution is devoted to the comparison of various resampling approaches that have been proposed in the literature on particle filtering. It is first shown using simple arguments that the so-called residual and stratified methods do yield an improvement over the basic multinomial resampling approach. A simple counter-example showing that this property does not hold true for systematic resam... View full abstract»

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  • Image registration in stereo-based multi-modal imaging systems

    Publication Year: 2005, Page(s):70 - 75
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (315 KB) | HTML iconHTML

    This paper describes an imaging system for the acquisition of physically disparate images, such as visible and infrared wavelength range images, together with an image registration algorithm. The algorithm makes use of 3D scene data obtained from stereo and integrates local and global registration methods in order to obtain registrations that have good positional accuracy and dense, gap-less image... View full abstract»

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  • Progress towards a system for the automatic recognition of pollen using light microscope images

    Publication Year: 2005, Page(s):76 - 81
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (232 KB) | HTML iconHTML

    This paper is a progress report on a continuing project aimed at the eventual realization of low-cost, automatic systems for the recognition and counting of both ancient and live pollen. A previous paper has reported on the classification of optical microscope images of pollen grains using Gabor transforms and shape described by moment invariants. This work has since been extended by the introduct... View full abstract»

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  • Topologically robust 3D modeling for shape approximation

    Publication Year: 2005, Page(s):82 - 87
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1048 KB) | HTML iconHTML

    This paper proposes a topologically robust and accurate shape modeling procedure that approximates a real 3D object based not on the widely used so-called ICP (iterative closed point) algorithm or the Delaunay triangulation for the noise resistive modeling and for the matrix-form meshing. A geometric model with desired meshing, not limited to a triangular one, but also quadrilateral, hexagonal or ... View full abstract»

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  • Computer-aided shape analysis and classification of weld defects in industrial radiography based invariant attributes and neural networks

    Publication Year: 2005, Page(s):88 - 93
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (391 KB) | HTML iconHTML

    The interpretation of possible weld discontinuities in industrial radiography is ensured by human interpreters. Consequently, it is submitted to subjective considerations such as the aptitude and the experiment of the interpreter, in addition of the poor quality of radiographic images, due essentially to the exposure conditions. These considerations make the weld quality interpretation inconsisten... View full abstract»

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  • Generalized fuzzy enhancement of image for radiographic testing weld

    Publication Year: 2005, Page(s):94 - 99
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (396 KB) | HTML iconHTML

    Since radiographic testing weld image possesses several shortcomings, such as bad contrast ratio, narrow range of grayscale and fuzzy image, common enhancement method cannot improve contrast ratio and at the same time preserve edges well. Fuzzy enhancement does not modify pixel graylevel in the fuzzy feature space just like histogram and can obtain high-definition image output. In this paper, on t... View full abstract»

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  • Fast algorithms of hypercomplex calculations: parallel approach

    Publication Year: 2005, Page(s):100 - 104
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (240 KB) | HTML iconHTML

    We consider technique for parallelization of computation with hypercomplex numbers in multidimensional space for signal processing purposes. In particular, parallel algorithms of the multidimensional hypercomplex discrete Fourier transform are developed. Results of their experimental research are shown. View full abstract»

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  • Wavelet time-scale dependencies for signal and image compression

    Publication Year: 2005, Page(s):105 - 110
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (327 KB) | HTML iconHTML

    In this paper, an evolution law through scales for modulus maxima of the wavelet transform of a signal is proposed. It corresponds to an atomic approximation of wavelet detail bands. Although this result is very general and useful for various fields of image processing, we focus on its application to signal and image compression. We propose a simple trick for taking advantage from the law without ... View full abstract»

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