Proceedings of the IEEE

Issue 5 • May 1979

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Displaying Results 1 - 25 of 30
  • [Front cover and table of contents]

    Publication Year: 1979, Page(s): c1
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  • Scanning the issue

    Publication Year: 1979, Page(s): 707
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  • A composite classifier system design: Concepts and methodology

    Publication Year: 1979, Page(s):708 - 713
    Cited by:  Papers (71)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (634 KB)

    This study explores the scope for achieving enhanced recognition system performance through deployment of a composite classifier system consisting of two or more component classifiers which belong to different categories. The domains of deployment of these individual components (classifiers) are determined by optimal partitioning of the problem space. The criterion for such optimal partitioning is... View full abstract»

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  • Linguistic analysis of experimental curves

    Publication Year: 1979, Page(s):714 - 736
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2370 KB)

    In the linguistic approach to pattern recognition, a special-purpose language is constructed, and algorithms using this language to analyze objects are developed. The algorithms described in this paper are for the analysis of experimental curves. A function to estimate the "complexity" of the curve parts is proposed. The algorithms differ from those for image processing in several respects. A sign... View full abstract»

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  • Hierarchies in structural pattern recognition

    Publication Year: 1979, Page(s):737 - 744
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1014 KB)

    This paper discusses a hierarchical approach to pattern analysis and recognition. A general discussion of the labeling problem in structural pattern recognition is followed by a discussion of a specific technique for shape analysis. The number of levels in the hierarchy depends on the complexity of the scene, and, with the exemption of the first two levels, the processing is of standard syntactica... View full abstract»

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  • Local versus global decisions in image recognition

    Publication Year: 1979, Page(s):745 - 752
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (806 KB)

    This paper discusses the ways of finding consistency between the well-known statistical statement that "guessing destroys information" and the practically obvious advantage of hierarchical decisions. Certain nonstatistical sources of recognition errors are indicated, the influence of these sources increasing with the size of the image parts on which the first-stage discrete decisions are taken. Th... View full abstract»

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  • Quantitative design and evaluation of enhancement/thresholding edge detectors

    Publication Year: 1979, Page(s):753 - 763
    Cited by:  Papers (331)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1065 KB)

    Quantitative design and performance evaluation techniques are developed for the enhancement/thresholding class of image edge detectors. The design techniques are based on statistical detection theory and deterministic pattern-recognition classification procedures. The performance evaluation methods developed include: a)deterministic measurement of the edge gradient amplitude; b)comparison of the p... View full abstract»

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  • Image segmentation and image models

    Publication Year: 1979, Page(s):764 - 772
    Cited by:  Papers (39)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1173 KB)

    This paper discusses image segmentation techniques from the standpoint of the assumptions that an image should satisfy in order for a particular technique to be applicable to it. These assumptions, which are often not stated explicitly, can be regarded as (perhaps informal) "models" for classes of images. The paper emphasizes two basic classes of models: statistical models that describe the pixel ... View full abstract»

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  • Image segmentation by clustering

    Publication Year: 1979, Page(s):773 - 785
    Cited by:  Papers (175)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1814 KB)

    This paper describes a procedure for segmenting imagery using digital methods and is based on a mathematical-pattern recognition model. The technique does not require training prototypes but operates in an "unsupervised" mode. The features most useful for the given image to be segmented are retained by the algorithm without human interaction, by rejecting those attributes which do not contribute t... View full abstract»

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  • Statistical and structural approaches to texture

    Publication Year: 1979, Page(s):786 - 804
    Cited by:  Papers (2047)  |  Patents (32)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2583 KB)

    In this survey we review the image processing literature on the various approaches and models investigators have used for texture. These include statistical approaches of autocorrelation function, optical transforms, digital transforms, textural edgeness, structural element, gray tone cooccurrence, run lengths, and autoregressive models. We discuss and generalize some structural approaches to text... View full abstract»

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  • Computer analysis of scenes with curved objects

    Publication Year: 1979, Page(s):805 - 812
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (985 KB)

    Most research efforts in scene analysis have concentrated on the analysis of block-world scenes. Having developed a good understanding of this limited world of computer vision, researchers are now trying to make computers see curved objects also. This paper presents an overview of the techniques developed for segmentation, representation, and recognition of curved objects in two-dimensional images... View full abstract»

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  • Coherent optical pattern recognition

    Publication Year: 1979, Page(s):813 - 825
    Cited by:  Papers (8)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1887 KB)

    Pattern-recognition systems, techniques, and applications using coherent optical systems are reviewed. Many optical pattern-recognition system architectures exist that include time-domain optical correlators and the optical joint transform correlators and refinements in the original optical matched spatial filter synthesis processor. Advanced optical pattern-recognition systems are also described ... View full abstract»

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  • Basics of cellular logic with some applications in medical image processing

    Publication Year: 1979, Page(s):826 - 856
    Cited by:  Papers (99)  |  Patents (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4401 KB)

    Cellular logic operations (CLO's) are performed digitally to transform an array of data P(I,J) into a new data array P'(I,J). The value of each element in the new array is determined by its value in the original array and the orginal values of its nearest neighbors. The neighborhood configuration (tessellation) is usually called the "cell"; whence the term "cellular logic." CLO's may be categorize... View full abstract»

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  • A simple proof of stability for all-pole linear prediction models

    Publication Year: 1979, Page(s):860 - 861
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (225 KB)

    A simple method of proof is presented for the minimum-phase property of the all-pole model obtained in the autocorrelation method of linear prediction. The proof does not require knowledge of Levinson's recursion and extends easily to some special cases of the covariance method of linear prediction. View full abstract»

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  • A subnanoampere current generator circuit technique

    Publication Year: 1979, Page(s):861 - 862
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    The interconnection of a conventional type of current generator and a 'floating' current-divider network, based on the use of an FET op amp, facilitates the design of a variable subnanoampere direct current generator having a high LF incremental output resistance and a shielded output lead. View full abstract»

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  • Computer generation of correlated Gaussian random variables

    Publication Year: 1979, Page(s):862 - 863
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (234 KB)

    This paper Presents a means of generating a set of N correlated Gaussian random variables from N or fewer independent Gaussian random variables. In computer generation of pseudorandom variables, this technique sometimes has computational advantages over the more straightforward inverse Gram-Schmidt procedure. As an example, application of the technique in simulation of a pulse frequency modulation... View full abstract»

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  • Output-extended sequential machines

    Publication Year: 1979, Page(s):864 - 866
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    A new class of sequential machine, called output-extended, is defined. In contradistinction to Moore and Mealy machines, the output state here is a function of the previous output as well as the present state and input. A particular form of output-extended machine is studied, in which the function in question is the Boolean intersection of the present output in the Mealy sense and the previous out... View full abstract»

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  • The Ph.D. system in the U.K.

    Publication Year: 1979, Page(s): 866
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (139 KB)

    First Page of the Article
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  • Low-order realizations for 2-D transfer functions

    Publication Year: 1979, Page(s):866 - 868
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    In this note, a realization result for casual 2-D transfer functions with separable numerator or separable denominator is generalized. A possible dimension of the local state space will be determined and system matrices will be given. View full abstract»

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  • A note invalidating some recent stability conjectures

    Publication Year: 1979, Page(s):868 - 869
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (221 KB)

    Some recent stability conjectures for second- and third-order nonlinear systems [1], [2] are shown to be incorrectly analyzed, and thus the assertions obtained are misleading and false in general. View full abstract»

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  • A new equal-valued grounded-capacitor resonator realization using current conveyor

    Publication Year: 1979, Page(s):870 - 871
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (197 KB)

    Using a second generation current conveyor (CC II), a new resonator network containing a resistance (R)-capacitance (C)-frequency dependent negative resistance (D) series configuration is proposed. The network is canonic and both the equal-valued capacitors are grounded. ω0and Q of the resonator have been shown to be practically insensitive to changes in active parameters. View full abstract»

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  • A recursive digital filter with simultaneous maximally flat magnitude and group delay at an arbitrary specified frequency

    Publication Year: 1979, Page(s):871 - 873
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (262 KB)

    A design technique for a recursive digital filter with simultaneously maximally flat magnitude and group delay at an arbitary specified frequency is presented, It employs the power series expansion to formulate a set of simultaneous linear equations which can be solved with a standard computational algorithm. View full abstract»

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  • Another design of the successive approximation register for A/D converters

    Publication Year: 1979, Page(s):873 - 874
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (181 KB)

    An alternative design of the successive approximation register is proposed. The design eliminates the dual flip-flop outputs of previous designs. View full abstract»

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  • Microwave auditory effects and applications

    Publication Year: 1979, Page(s):875 - 876
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    Freely Available from IEEE
  • Digital communications by satellite

    Publication Year: 1979, Page(s): 875
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    Freely Available from IEEE

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H. Joel Trussell
North Carolina State University