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IEEE Transactions on Pattern Analysis and Machine Intelligence

Issue 1 • Date Jan. 1995

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Displaying Results 1 - 13 of 13
  • Editorial

    Publication Year: 1995, Page(s): 1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (848 KB)

    THE IEEE Transactions on Pattern Analysis and Machine Intelligence (PAMI) has become the premier journal in our ??eld due to the vision and leadership provided by past editors- in-chief, King-Sun Fu, Theo Pavlidis, Steve Tanimoto and Anil Jain. Thus, it is with a great sense of honor I have accepted the responsibilities of becoming PAMI's ??fth Editorin- Chief. My primary goal is to maintain its e... View full abstract»

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  • Invariants of six points and projective reconstruction from three uncalibrated images

    Publication Year: 1995, Page(s):34 - 46
    Cited by:  Papers (46)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1028 KB)

    There are three projective invariants of a set of six points in general position in space. It is well known that these invariants cannot be recovered from one image, however an invariant relationship does exist between space invariants and image invariants. This invariant relationship is first derived for a single image. Then this invariant relationship is used to derive the space invariants, when... View full abstract»

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  • A method of combining multiple experts for the recognition of unconstrained handwritten numerals

    Publication Year: 1995, Page(s):90 - 94
    Cited by:  Papers (181)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    For pattern recognition, when a single classifier cannot provide a decision which is 100 percent correct, multiple classifiers should be able to achieve higher accuracy. This is because group decisions are generally better than any individual's. Based on this concept, a method called the “Behavior-Knowledge Space Method” was developed, which can aggregate the decisions obtained from in... View full abstract»

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  • Automated evaluation of OCR zoning

    Publication Year: 1995, Page(s):86 - 90
    Cited by:  Papers (34)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    Many current optical character recognition (OCR) systems attempt to decompose printed pages into a set of zones, each containing a single column of text, before converting the characters into coded form. The authors present a methodology for automatically assessing the accuracy of such decompositions, and demonstrate its use in evaluating six OCR systems View full abstract»

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  • Area and length preserving geometric invariant scale-spaces

    Publication Year: 1995, Page(s):67 - 72
    Cited by:  Papers (39)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    In this paper, area preserving multi-scale representations of planar curves are described. This allows smoothing without shrinkage at the same time preserving all the scale-space properties. The representations are obtained deforming the curve via geometric heat flows while simultaneously magnifying the plane by a homethety which keeps the enclosed area constant. When the Euclidean geometric heat ... View full abstract»

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  • Recursive filters for optical flow

    Publication Year: 1995, Page(s):61 - 67
    Cited by:  Papers (53)  |  Patents (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    Working toward efficient (real-time) implementations of optical flow methods, the authors have applied simple recursive filters to achieve temporal smoothing and differentiation of image intensity, and to compute 2d flow from component velocity constraints using spatiotemporal least-squares minimization. Accuracy in simulation is similar to that obtained in the study by Barren et al. (1994), while... View full abstract»

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  • An evaluation of intrinsic dimensionality estimators

    Publication Year: 1995, Page(s):81 - 86
    Cited by:  Papers (33)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (600 KB)

    The intrinsic dimensionality of a data set may be useful for understanding the properties of classifiers applied to it and thereby for the selection of an optimal classifier. In this paper the authors compare the algorithms for two estimators of the intrinsic dimensionality of a given data set and extend their capabilities. One algorithm is based on the local eigenvalues of the covariance matrix i... View full abstract»

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  • Texture segmentation using fractal dimension

    Publication Year: 1995, Page(s):72 - 77
    Cited by:  Papers (181)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    This paper deals with the problem of recognizing and segmenting textures in images. For this purpose the authors employ a technique based on the fractal dimension (FD) and the multi-fractal concept. Six FD features are based on the original image, the above average/high gray level image, the below average/low gray level image, the horizontally smoothed image, the vertically smoothed image, and the... View full abstract»

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  • Analysis of camera movement errors in vision-based vehicle tracking

    Publication Year: 1995, Page(s):57 - 61
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    When a camera is used to provide the navigational parameters in autonomous vehicle operations, it is subjected to unexpected movements or vibrations of the mounting platform. This paper presents a framework for analyzing the effect of uncontrollable camera movements on the navigational parameters, in particular on the range and-heading angle in vision-based vehicle tracking. The noise introduced b... View full abstract»

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  • Decomposition of arbitrarily shaped morphological structuring elements

    Publication Year: 1995, Page(s):2 - 15
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (988 KB)

    For image processing systems that have a limited size of region of support, say 3×3, direct implementation of morphological operations by a structuring element larger than the prefixed size is impossible. The decomposition of morphological operations by a large structuring element into a sequence of recursive operations, each using a smaller structuring element, enables the implementation of... View full abstract»

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  • Fundamental limitations on projective invariants of planar curves

    Publication Year: 1995, Page(s):77 - 81
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    In this paper, some fundamental limitations of projective invariants of non-algebraic planar curves are discussed. It is shown that all curves within a large class can be mapped arbitrarily close to a circle by projective transformations. It is also shown that arbitrarily close to each of a finite number of closed planar curves there is one member of a set of projectively equivalent curves. Thus a... View full abstract»

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  • Efficient image processing algorithms on the scan line array processor

    Publication Year: 1995, Page(s):47 - 56
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (952 KB)

    Develops efficient algorithms for low and intermediate level image processing on the scan line array processor, a SIMD machine consisting of a linear array of cells that processes images in a scan line fashion. For low level processing, the authors present algorithms for block DFT, block DCT, convolution, template matching, shrinking, and expanding which run in real-time. By real-time, the authors... View full abstract»

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  • Edge and line feature extraction based on covariance models

    Publication Year: 1995, Page(s):16 - 33
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1564 KB)

    Image segmentation based on contour extraction usually involves three stages of image operations: feature extraction, edge detection and edge linking. This paper is devoted to the first stage: a method to design feature extractors used to detect edges from noisy and/or blurred images. The method relies on a model that describes the existence of image discontinuities (e.g. edges) in terms of covari... View full abstract»

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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