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IEEE Signal Processing Letters

Issue 7 • Date July 1995

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Displaying Results 1 - 4 of 4
  • Vector quantization of ECG wavelet coefficients

    Publication Year: 1995, Page(s):129 - 131
    Cited by:  Papers (8)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (225 KB)

    An improved wavelet compression algorithm for ECG signals has been developed with the use of vector quantization on wavelet coefficients. Vector quantization on scales of long duration and low dynamic range retains feature integrity of the ECG with a very low bit-per-sample rate. Preliminary results indicate that the proposed method excels over standard techniques for high fidelity compression.< View full abstract»

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  • Multisplines and adaptive scale-space atom selection for image representation

    Publication Year: 1995, Page(s):132 - 134
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    We propose a new stochastic process that we use for modeling an image. We also propose a criterion for function estimation and derive the algorithm that yields the optimal estimate. The algorithm chooses scale-space atoms in an adaptive manner as opposed to the multiresolution approach, which uses all scale-space atoms at any given resolution. Experimental results of our technique are also include... View full abstract»

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  • A harmonic noise model for direction finding in colored ambient noise

    Publication Year: 1995, Page(s):135 - 137
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (235 KB)

    High-resolution algorithms for direction finding of narrowband sources require a good estimate of the noise correlation matrix. We derive a physically motivated linear noise model. It is based on a Fourier expansion of the ambient noise field and is applicable to arbitrary antenna arrays. We also show that for contrived cases, a linear model may not be uniquely identifiable.<> View full abstract»

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  • Application of multidimensional wave digital filters to boundary value problems

    Publication Year: 1995, Page(s):138 - 140
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (262 KB)

    The application of multidimensional wave digital filter principles to the numerical solution of partial differential equations has been introduced in various recent publications. However, the examples presented so far do not explicitly consider boundary conditions. This letter shows how to incorporate boundary values into a multidimensional wave digital filter. A lossy transmission line of finite ... View full abstract»

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Aims & Scope

The IEEE Signal Processing Letters is a monthly, archival publication designed to provide rapid dissemination of original, cutting-edge ideas and timely, significant contributions in signal, image, speech, language and audio processing.

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Meet Our Editors

Editor-in-Chief
Peter Willett
University of Connecticut
Storrs, CT 06269
peter.willett@uconn.edu