IEEE Transactions on Pattern Analysis and Machine Intelligence

Issue 12 • Dec. 1993

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Displaying Results 1 - 11 of 11
  • Comments on "Design of fiducials for accurate registration using machine vision"

    Publication Year: 1993, Page(s):1330 - 1332
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (306 KB)

    The commenters point out that the subpixel registration accuracy improves by one order of magnitude if images are not binarized as indicated in the above said paper by Bose and Amir (ibid. vol.12, p.1196-1200 (1990), but gray scale information is fully exploited in calculating the centroid position.<> View full abstract»

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  • Stability of phase information

    Publication Year: 1993, Page(s):1253 - 1268
    Cited by:  Papers (120)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1476 KB)

    This paper concerns the robustness of local phase information for measuring image velocity and binocular disparity. It addresses the dependence of phase behavior on the initial filters as well as the image variations that exist between different views of a 3D scene. We are particularly interested in the stability of phase with respect to geometric deformations, and its linearity as a function of s... View full abstract»

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  • Multimodal estimation of discontinuous optical flow using Markov random fields

    Publication Year: 1993, Page(s):1217 - 1232
    Cited by:  Papers (148)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1544 KB)

    The estimation of dense velocity fields from image sequences is basically an ill-posed problem, primarily because the data only partially constrain the solution. It is rendered especially difficult by the presence of motion boundaries and occlusion regions which are not taken into account by standard regularization approaches. In this paper, the authors present a multimodal approach to the problem... View full abstract»

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  • The integration of image segmentation maps using region and edge information

    Publication Year: 1993, Page(s):1241 - 1252
    Cited by:  Papers (75)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1208 KB)

    We present an algorithm that integrates multiple region segmentation maps and edge maps. It operates independently of image sources and specific region-segmentation or edge-detection techniques. User-specified weights and the arbitrary mixing of region/edge maps are allowed. The integration algorithm enables multiple edge detection/region segmentation modules to work in parallel as front ends. The... View full abstract»

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  • An algebraic approach to automatic construction of structural models

    Publication Year: 1993, Page(s):1298 - 1311
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1172 KB)

    We present algebraic approach to the inductive learning of structural models and automatic construction of shape prototypes for character recognition on the basis of the algebraic description of curve structure proposed by Nishida and Mori (1991, 1992). A class in the structural models is a set of shapes that can be transformed continuously to each other. We consider an algebraic representation of... View full abstract»

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  • Color space analysis of mutual illumination

    Publication Year: 1993, Page(s):1319 - 1326
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (804 KB)

    Mutual illumination occurs when light reflected from one surface impinges on a second one. The resulting additional illumination incident on the second surface affects both the color and intensity of the light reflected from it. As a consequence, the image of a surface in the presence of mutual illumination differs from what it otherwise would have been in the absence of mutual illumination. Unacc... View full abstract»

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  • Spatial reasoning for the automatic recognition of machinable features in solid models

    Publication Year: 1993, Page(s):1269 - 1285
    Cited by:  Papers (133)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1580 KB)

    Discusses an automatic feature recognizer that decomposes the total volume to be machined into volumetric features that satisfy stringent conditions for manufacturability, and correspond to operations typically performed in 3-axis machining centers. Unlike most of the previous research, the approach is based on general techniques for dealing with features with intersecting volumes. Feature interac... View full abstract»

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  • A prototype filter design approach to pyramid generation

    Publication Year: 1993, Page(s):1233 - 1240
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    This paper presents a technique for image pyramid generation, in which the reduction (expansion) factor between layers is any rational number M/L. The image pyramid generation is modeled as an interpolation and filtering followed by a decimation. The model enables frequency domain analysis of the image pyramid, as well as convenient design of the generating kernels. L(M) generating kernels are nec... View full abstract»

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  • A metric for line segments

    Publication Year: 1993, Page(s):1312 - 1318
    Cited by:  Papers (27)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (600 KB)

    This correspondence presents a metric for describing line segments. This metric measures how well two line segments can be replaced by a single longer one. This depends for example on collinearity and nearness of the line segments. The metric is constructed using a new technique using so-called neighborhood functions. The behavior of the metric depends on the neighborhood function chosen. In this ... View full abstract»

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  • Map learning and clustering in autonomous systems

    Publication Year: 1993, Page(s):1286 - 1297
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1064 KB)

    Building autonomous systems, self-learning while moving in an unknown environment, finds a variety of challenging applications. This paper presents a new approach, called clustering by discovery, for identification of clusters in a map which is being learned by exploration. The concomitance of exploration and clustering, we argue, is a mandatory feature for an autonomous system, hence the clusteri... View full abstract»

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  • Vector quantization technique for nonparametric classifier design

    Publication Year: 1993, Page(s):1326 - 1330
    Cited by:  Papers (34)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    An effective data reduction technique based on vector quantization is introduced for nonparametric classifier design. Two new nonparametric classifiers are developed, and their performance is evaluated using various examples. The new methods maintain a classification accuracy that is competitive with that of classical methods but, at the same time, yields very high data reduction rates 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.

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Meet Our Editors

Editor-in-Chief
Sven Dickinson
University of Toronto
e-mail: sven@cs.toronto.edu