By Topic

IEEE Transactions on Image Processing

Issue 2 • Apr 1992

Filter Results

Displaying Results 1 - 13 of 13
  • Side match and overlap match vector quantizers for images

    Publication Year: 1992, Page(s):170 - 185
    Cited by:  Papers (168)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2076 KB)

    A class of vector quantizers with memory that are known as finite state vector quantizers (FSVQs) in the image coding framework is investigated. Two FSVQ designs, namely side match vector quantizers (SMVQs) and overlap match vector quantizers (OMVQs), are introduced. These designs take advantage of the 2-D spatial contiguity of pixel vectors as well as the high spatial correlation of pixels in typ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Image coding using wavelet transform

    Publication Year: 1992, Page(s):205 - 220
    Cited by:  Papers (1900)  |  Patents (131)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1788 KB)

    A scheme for image compression that takes into account psychovisual features both in the space and frequency domains is proposed. This method involves two steps. First, a wavelet transform used in order to obtain a set of biorthogonal subclasses of images: the original image is decomposed at different scales using a pyramidal algorithm architecture. The decomposition is along the vertical and hori... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Recursive optimal pruning with applications to tree structured vector quantizers

    Publication Year: 1992, Page(s):162 - 169
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    A pruning algorithm of P.A. Chou et al. (1989) for designing optimal tree structures identifies only those codebooks which lie on the convex hull of the original codebook's operational distortion rate function. The authors introduce a modified version of the original algorithm, which identifies a large number of codebooks having minimum average distortion, under the constraint that, in each step, ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A mathematical morphology approach to Euclidean distance transformation

    Publication Year: 1992, Page(s):197 - 204
    Cited by:  Papers (58)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (760 KB)

    A distance transformation technique for a binary digital image using a gray-scale mathematical morphology approach is presented. Applying well-developed decomposition properties of mathematical morphology, one can significantly reduce the tremendous cost of global operations to that of small neighborhood operations suitable for parallel pipelined computers. First, the distance transformation using... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Spatially invariant image sequences

    Publication Year: 1992, Page(s):148 - 161
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1552 KB)

    The authors define linearly additive spatially invariant image sequences and present an explicit mathematical model for describing them. In such a sequence, all objects are positionally invariant in each image of the sequence but have varying gray-scale contributions to the successive images of the sequence. The various components (features or processes) of the scene or object contribute additivel... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An edge preserving differential image coding scheme

    Publication Year: 1992, Page(s):250 - 256
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (692 KB)

    Differential encoding techniques are fast and easy to implement. However, a major problem with the use of differential encoding for images is the rapid edge degradation encountered when using such systems. This makes differential encoding techniques of limited utility, especially when coding medical or scientific images, where edge preservation is of utmost importance. A simple, easy to implement ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A random-field model-based algorithm for anomalous complex image pixel detection

    Publication Year: 1992, Page(s):186 - 196
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (800 KB)

    Random-field model-based algorithms for the detection of anomalous pixels associated with complex valued imagery may be essential to robust focus of attention, target detection, and curing. The described algorithm includes the fitting of a specific class of causal, two-dimensional autoregressive random-field models to image data over specified estimation windows, and then subsequent construction o... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Diffraction tomographic reconstruction from intensity data

    Publication Year: 1992, Page(s):221 - 228
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1004 KB)

    The problem of reconstructing the complex index of refraction of a weakly inhomogeneous scattering object from measurements of the magnitude (intensity) of the transmitted wavefields in a set of scattering experiments within the context of diffraction tomography (DT) is addressed. It is shown that high quality approximate reconstructions can be obtained from such intensity data using standard reco... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Restoration of randomly blurred images via the maximum a posteriori criterion

    Publication Year: 1992, Page(s):256 - 262
    Cited by:  Papers (5)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (764 KB)

    The maximum a posteriori (MAP) estimation technique is applied to the problem of restoring images distorted by noisy point spread functions and additive noise. The resulting MAP estimator is nonlinear and is obtained by numerically maximizing a conditional probability density function. The energy nonnegativity constraint is incorporated in the optimization process. Although the deblurring results ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Tree coding of image subbands

    Publication Year: 1992, Page(s):133 - 147
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1544 KB)

    The authors consider the encoding of image subbands with a tree code that is asymptotically optimal for Gaussian sources and the mean squared error (MSE) distortion measure. They first prove that optimal encoding of ideally filtered subbands of a Gaussian image source achieves the rate distortion bound for the MSE distortion measure. The optimal rate and distortion allocation among the subbands is... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Phase and amplitude phase restoration in synthetic aperture radar imaging

    Publication Year: 1992, Page(s):229 - 242
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1124 KB)

    Methods for addressing two types of multiplicative noise in synthetic aperture radar (SAR) imaging are presented. The authors consider a multiplicative noise with a real phase (i.e. the SAR signal's phase is contaminated but its amplitude is uncorrupted) that possesses unknown functional characteristics with respect to the radar signal's temporal frequencies. A perturbation solution for phase reco... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Iterative methods for solving the Gabor expansion: considerations of convergence

    Publication Year: 1992, Page(s):243 - 244
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (156 KB)

    J.G. Daugman's (1988) neural network solution to the Gabor expansion of an image is reformulated as a steepest descent implementation. Nonlinear optimization theory is then applied to select an appropriate convergence factor. Two quasi-Newton-based nonlinear optimization techniques are applied to improve the convergence for certain types of lattice View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Image compression using the 2-D wavelet transform

    Publication Year: 1992, Page(s):244 - 250
    Cited by:  Papers (362)  |  Patents (51)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1072 KB)

    The 2-D orthogonal wavelet transform decomposes images into both spatial and spectrally local coefficients. The transformed coefficients were coded hierarchically and individually quantized in accordance with the local estimated noise sensitivity of the human visual system (HVS). The algorithm can be mapped easily onto VLSI. For the Miss America and Lena monochrome images, the technique gave high ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

Aims & Scope

IEEE Transactions on Image Processing focuses on signal-processing aspects of image processing, imaging systems, and image scanning, display, and printing.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Scott Acton
University of Virginia
Charlottesville, VA, USA
E-mail: acton@virginia.edu 
Phone: +1 434-982-2003