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IEEE Transactions on Pattern Analysis and Machine Intelligence

Issue 5 • Date Sept. 1984

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Displaying Results 1 - 21 of 21
  • [Front cover]

    Publication Year: 1984, Page(s): c1
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  • List of Contributors

    Publication Year: 1984, Page(s): nil1
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  • [Breaker page]

    Publication Year: 1984, Page(s): nil1
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  • Some Experiments on Estimating the 3-D Motion Parameters of a Rigid Body from Two Consecutive Image Frames

    Publication Year: 1984, Page(s):545 - 554
    Cited by:  Papers (60)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4323 KB)

    This paper describes the results of some experiments on estimating the 3-D motion parameters of a rigid body from two consecutive TV images, and discusses several factors which affect the accuracy of the results. These factors include the sizes of the motion parameters themselves, the accuracy of the raw data, and the number of point correspondences. In addition, we address two related topics: det... View full abstract»

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  • Low Level Image Segmentation: An Expert System

    Publication Year: 1984, Page(s):555 - 577
    Cited by:  Papers (85)  |  Patents (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6972 KB)

    A major problem in robotic vision is the segmentation of images of natural scenes in order to understand their content. This paper presents a new solution to the image segmentation problem that is based on the design of a rule-based expert system. General knowledge about low level properties of processes employ the rules to segment the image into uniform regions and connected lines. In addition to... View full abstract»

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  • A Necessary and Sufficient Condition for a Picture to Represent a Polyhedral Scene

    Publication Year: 1984, Page(s):578 - 586
    Cited by:  Papers (26)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2584 KB)

    As Shapira pointed out, a theorem by the author on line drawings of polyhedral scenes was not accurate. The present paper shows that the validity of the theorem is attained by a slight revision of the formulation. View full abstract»

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  • Modeling of Atmospheric Disturbances in Meteorological Pictures

    Publication Year: 1984, Page(s):587 - 600
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6585 KB)

    This paper describes a model-based approach to perform tracking of extratropical atmospheric disturbances from a sequence of satellite cloud-cover images. More precisely, it deals with the estimation of motion of these spiral-shaped cloud systems (both translational and rotational motion), and the measurement of the evolution of their shape. Tracking is achieved by recording from one image to the ... View full abstract»

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  • Toward a Fundamental Theory of Optimal Feature Selection: Part I

    Publication Year: 1984, Page(s):601 - 616
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3228 KB)

    Several authors have studied the problem of dimensionality reduction or feature selection using statistical distance measures, e.g., the Chernoff coefficient, Bhattacharyya distance, I-divergence, and J-divergence because they generally felt that direct use of the probability of classification error expression was either computationally or mathematically intractable. We show that for the difficult... View full abstract»

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  • A Walsh-Hadamard Based Distributed Storage Device for the Associative Search of Information

    Publication Year: 1984, Page(s):617 - 623
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1575 KB)

    A computer model for a distributed associative memory has been developed based on Walsh-Hadamard functions. In this memory device, the information storage is distributed over the entire memory medium and thereby lends itself to parallel comparison of the input with stored data. These inherent economic storage and parallel processing capabilities may be found effective especially in real-time proce... View full abstract»

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  • Segmentation of Frame Sequences Obtained by a Moving Observer

    Publication Year: 1984, Page(s):624 - 629
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3784 KB)

    In many applications of computer vision, a frame sequence may be acquired using a moving camera. We propose ego-motion polar transformation for segmentation of such sequences. It is shown that segmentation and extraction of motion information become easier in the transformed domain. Our experience with a translating camera indicates that this technique can play a very important role in the analysi... View full abstract»

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  • On the Detection of Peaks and Valleys Using the Local Descriptors Method

    Publication Year: 1984, Page(s):629 - 632
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1467 KB)

    In this correspondence it is demonstrated that the derivative of the angle with respect to an arbitrary independent parameter cannot in general be used to find peaks and valleys of a shape. It is then shown, using concepts from differential geometry, that curvature corresponds to the derivative of the angle with respect to an independent variable if and only if the angle is deflned as a single var... View full abstract»

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  • Spirograph Theory: A Framework for Calculations on Digitized Straight Lines

    Publication Year: 1984, Page(s):632 - 639
    Cited by:  Papers (11)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1665 KB)

    Using diagrams called ``spirographs'' a general theory is developed with which one can easily perform calculations on various aspects of digitized straight lines. The mathematics of the theory establishes a link between digitized straight lines and the theory of numbers (Farey series, continued fractions). To show that spirograph theory is a useful unification, we derive two previously known advan... View full abstract»

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  • Three-Dimensional Digital Planes

    Publication Year: 1984, Page(s):639 - 645
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1817 KB)

    Definitions of 3-D digital surface and plane are introduced. Many geometric properties of these objects are examined. In particular, it is shown that digital convexity is neither a necessary nor a sufficient condition for a digital surface element to be a convex digital plane element, but it is both necessary and sufficient for a digital surface to be a digital plane. Also algorithms are presented... View full abstract»

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  • Cluster Definition by the Optimization of Simple Measures

    Publication Year: 1984, Page(s):645 - 652
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1518 KB)

    We adopt the following measures of clustering based on simple edge counts in an undirected loop-free graph. Let S be a subset of the points of the graph. The compactness of S is measured by the number of edges connecting points in S to other points in S. The isolation or separation of S is measured by the negative of the number of edges connecting points in S to points not in S. The subset S is a ... View full abstract»

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  • Properties of Separable Covariance Matrices and Their Associated Gaussian Random Processes

    Publication Year: 1984, Page(s):652 - 656
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (941 KB)

    A number of properties of separable covariance matrices are summarized. Expressions for the divergence of the corresponding two-dimensional Gaussian random processes are given in terms of row and column covariance matrices, and in terms of linear prediction parameters and maximum likelihood spectral estimates. Such time and frequency domain expressions are not widely known, even for one-dimensiona... View full abstract»

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  • Comments on ``Application of the Conditional Population-Mixture Model to Image Segmentation''

    Publication Year: 1984, Page(s):656 - 658
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (694 KB)

    In the above correspondence1 a maximum likelihood method is proposed for ``estimating'' class memberships and underlying statistical parameters, within the context of distribution mixtures. In the present comment it is pointed out that biases are incurred in parameter estimation, that the class memberships and parameters are conceptually different, and therefore that the so-called standard mixture... View full abstract»

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  • Comments on ``A Model for Radar Images and Its Application to Adaptive Digital Filtering of Multiplicative Noise''

    Publication Year: 1984, Page(s):658 - 659
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    In a recent paper [1] a model for radar images was derived and a method for mean-square error (MSE) filtering of noisy radar images was presented. The purpose of this correspondence is to point out that the filter in [1] is not optimum in the MSE sense and to show that the ultimate filter scheme is based on a very restricted model for radar images. View full abstract»

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  • Author's reply

    Publication Year: 1984, Page(s): 659
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  • Call for Papers

    Publication Year: 1984, Page(s): 660
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    Freely Available from IEEE
  • List of Contributors

    Publication Year: 1984, Page(s): nil2
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  • [Front cover]

    Publication Year: 1984, Page(s): c2
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Aims & Scope

The IEEE Transactions on Pattern Analysis and Machine Intelligence (TPAMI) is published monthly. Its editorial board strives to present most important research results in areas within TPAMI's scope.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
David A. Forsyth
University of Illinois
e-mail: daf@illinois.edu