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IEEE Transactions on Pattern Analysis and Machine Intelligence

Issue 4 • Date Apr 1990

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Displaying Results 1 - 8 of 8
  • Reconstructing convex sets from support line measurements

    Publication Year: 1990, Page(s):377 - 389
    Cited by:  Papers (18)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1116 KB)

    Algorithms are proposed for reconstructing convex sets given noisy support line measurements. It is observed that a set of measured support lines may not be consistent with any set in the plane. A theory of consistent support lines which serves as a basis for reconstruction algorithms that take the form of constrained optimization algorithms is developed. The formal statement of the problem and co... View full abstract»

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  • Modeling light reflection for computer color vision

    Publication Year: 1990, Page(s):402 - 409
    Cited by:  Papers (52)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (668 KB)

    In computer vision applications, analysis of shading information requires a proper model of light reflection from object surfaces. To overcome the shortcoming of the most often used model and to extend the reflection model for computer color vision, an examination is made of the light reflection problem using the bidirectional spectral-reflectance distribution function (BSRDF) to specify both inci... View full abstract»

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  • Coping with discontinuities in computer vision: their detection, classification, and measurement

    Publication Year: 1990, Page(s):321 - 344
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1748 KB)

    The general principles of detection, classification, and measurement of discontinuities are studied. The following issues are discussed: detecting the location of discontinuities; classifying discontinuities by their degrees; measuring the size of discontinuities; and coping with the random noise and designing optimal discontinuity detectors. An algorithm is proposed for discontinuity detection fr... View full abstract»

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  • An interobject distance measure based on medial axes retrieved from discrete distance maps

    Publication Year: 1990, Page(s):390 - 397
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    A method that measures the distance between extended objects of nonregular shape is presented. The distance measure is an average of a set of minimal point-to-point distances between the borders of the objects. The set of points is collected with a well-defined criterion based on processing of distance values on a connected medial axis formed between the objects View full abstract»

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  • High-speed triangulation-based 3-D imaging with orthonormal data projections and error detection

    Publication Year: 1990, Page(s):409 - 416
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (760 KB)

    Improvements to the triangulation range-sensing technique are described. The improvements greatly increase the range-data collection rate, while simultaneously providing for improved data integrity and a low-cost implementation. These benefits are achieved by using some unique abilities of the charge-injection-device image sensor. A laser-based investigation system has been built around a personal... View full abstract»

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  • The chain pyramid: hierarchical contour processing

    Publication Year: 1990, Page(s):363 - 376
    Cited by:  Papers (13)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1268 KB)

    A novel hierarchical approach toward fast parallel processing of chain-codable contours is presented. The environment, called the chain pyramid, is similar to a regular nonoverlapping image pyramid structure. The artifacts of contour processing on pyramids are eliminated by a probabilistic allocation algorithm. Building of the chain pyramid is modular, and for different applications new algorithms... View full abstract»

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  • A frequency domain algorithm for multiframe detection and estimation of dim targets

    Publication Year: 1990, Page(s):398 - 401
    Cited by:  Papers (57)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    An algorithm for detecting moving targets by imaging sensors and estimating their trajectories is proposed. The algorithm is based on directional filtering in the frequency domain, using a bank of filters for all possible target directions. The directional filtering effectively integrates the target signal, resulting in an improved signal-to-noise ratio. Working in the frequency domain facilitates... View full abstract»

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  • Shape reconstruction on a varying mesh

    Publication Year: 1990, Page(s):345 - 362
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1584 KB)

    A central class of image understanding problems is concerned with reconstructing a shape from an incomplete data set, such as fitting a surface to (partially) given contours. A new theory for solving such problems is presented. Unlike the current heuristic methods, the method used starts from fundamental principles that should be followed by any reconstruction method, regardless of its mathematica... 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
David A. Forsyth
University of Illinois
e-mail: daf@illinois.edu