IEE Proceedings - Vision, Image and Signal Processing

Issue 5 • Oct 1999

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Displaying Results 1 - 8 of 8
  • Blind reconstruction of non-minimum-phase systems from 1-D oblique slices of bispectrum

    Publication Year: 1999, Page(s):253 - 264
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (388 KB)

    The author considers the problem of identifying a non-minimum-phase signal from one-dimensional slices of its output bispectra. It is proved that any single slice of the bispectrum carries sufficient information to estimate the impulse response of a complex valued system within a time shift, as long as the chosen slice is not parallel to any one of the frequency axes or to the diagonal at 135 degr... View full abstract»

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  • One-dimensional linear periodically time-varying structures: derivations, interrelationships and properties

    Publication Year: 1999, Page(s):245 - 252
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (288 KB)

    The author presents all the derivations of, and the interrelationships for, four principle models of a one-dimensional, linear periodically time-varying (LPTV) system. These results are then used to both analyse cascade and parallel structures and solve the LPTV inverse filter problem View full abstract»

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  • Obtaining medial responses from steerable filters

    Publication Year: 1999, Page(s):286 - 292
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (376 KB)

    In building up a multiscale, medial axis representation, the generation of medial responses from a set of boundary responses at multiple scales can be a computationally intensive process. Polar separable medial weighting kernels are applied to the computation of medial responses. An approximate method for the synthesis of rotated kernels is proposed. Because of the need to not only rotate, but to ... View full abstract»

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  • Forward sequential algorithms for best basis selection

    Publication Year: 1999, Page(s):235 - 244
    Cited by:  Papers (47)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (404 KB)

    The problem of signal representation in terms of basis vectors from a large, over-complete, spanning dictionary has been the focus of much research. Achieving a succinct, or `sparse', representation is known as the problem of best basis representation. Methods are considered which seek to solve this problem by sequentially building up a basis set for the signal. Three distinct algorithm types have... View full abstract»

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  • Image distortions produced by mean, median and mode filters

    Publication Year: 1999, Page(s):279 - 285
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (272 KB)

    The paper reviews earlier continuum models of image distortions produced by mean, median and mode filters, and shows that rigorous discrete calculations are required to give predictions that agree accurately with experimental measurements in the median case. In addition, the paper describes what is believed to be the first discrete model of the distortions produced by median filters that is able t... View full abstract»

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  • Bispectral and trispectral features for machine condition diagnosis

    Publication Year: 1999, Page(s):229 - 234
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (260 KB)

    The application of bispectral and trispectral analysis in condition monitoring is discussed. Higher-order spectral analysis of machine vibrations for the provision of diagnostic features is investigated. Experimental work is based on vibration data collected from a small test rig subjected to bearing faults. The direct use of the entire bispectrum or trispectrum to provide diagnostic features is i... View full abstract»

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  • Design and implementation of a new efficient median filtering algorithm

    Publication Year: 1999, Page(s):273 - 278
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (200 KB)

    A new bit-level algorithm for median-type filters, based on the concept of majority, and a new hardware implementation suitable for VLSI implementation are introduced. The proposed structure has an area complexity of O(N(N+w)) and a time complexity of O(w). Compared with other existing algorithms, the new algorithm exhibits reduced hardware requirements and better processing speed. In addition, a ... View full abstract»

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  • Design of QMF banks based on derivative information

    Publication Year: 1999, Page(s):265 - 272
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (284 KB)

    New L2 objective functions for the design of quadrature mirror filter (QMF) banks are proposed. They are based on the derivative information of the reconstruction error. Simple and explicit matrix-form formulas for the proposed objective functions are derived. Efficient design methods are proposed by incorporating a separability technique into the derived optimality conditions on protot... View full abstract»

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Aims & Scope

Published from 1994-2006, IEE Proceedings - Vision, Image and Signal Processing contained significant and original contributions on computer vision, image processing and signal processing.

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