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IEEE Transactions on Pattern Analysis and Machine Intelligence

Issue 4 • Apr 1992

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Displaying Results 1 - 8 of 8
  • A generalized depth estimation algorithm with a single image

    Publication Year: 1992, Page(s):405 - 411
    Cited by:  Papers (48)  |  Patents (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB)

    A depth estimation algorithm proposed by A.P. Pentland (1987) is generalized. In the proposed algorithm, the raw image data in the vicinity of the edge is used to estimate the depth from defocus. Since no differentiation operation on the image data is required before the optimization process, the method is less sensitive to the noise disturbance of measurements. Furthermore, the edge orientation t... View full abstract»

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  • Reasoning about edges in scale space

    Publication Year: 1992, Page(s):450 - 468
    Cited by:  Papers (44)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1792 KB)

    Explores the role of reasoning in early vision processing. In particular, the problem of detecting edges is addressed. The authors do not try to develop another edge detector, but rather, they study an edge detector rigorously to understand its behavior well enough to formulate a reasoning process that allow appliance of the detector judiciously to recover useful information. They present a multis... View full abstract»

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  • Scale-based detection of corners of planar curves

    Publication Year: 1992, Page(s):430 - 449
    Cited by:  Papers (196)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2156 KB)

    A technique for detecting and localizing corners of planar curves is proposed. The technique is based on Gaussian scale space, which consists of the maxima of absolute curvature of the boundary function presented at all scales. The scale space of isolated simple and double corners is first analyzed to investigate the behavior of scale space due to smoothing and interactions between two adjacent co... View full abstract»

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  • Analysis of 2-D occlusion by subtracting out

    Publication Year: 1992, Page(s):485 - 489
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    A provably correct polynomial-time algorithm for complete systematic analysis of occlusion in synthetically generated noise-free pictures of 2-D objects is introduced. The algorithm first recognizes occluding objects and then ignores the mismatch with pixels in occluding objects while recognizing occluded objects by template matching View full abstract»

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  • What's in a set of points? [straight line fitting]

    Publication Year: 1992, Page(s):496 - 500
    Cited by:  Papers (33)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    The problem of fitting a straight line to a planar set of points is reconsidered. A parameter space computational approach capable of fitting one or more lines to a set of points is presented. The suggested algorithm handles errors in both coordinates of the data points, even when the error variances vary between coordinates and among points and can be readily made robust to outliers. The algorith... View full abstract»

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  • Multiple widths yield reliable finite differences [computer vision]

    Publication Year: 1992, Page(s):412 - 429
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1660 KB)

    A finite difference edge finder in which the finite difference is computed at a range of widths, i.e. a range of distances between data points, is introduced. Wide operators report low-amplitude responses more reliably than narrow operators, so if wide operators are used to fill gaps in narrow operator responses, each operator can be restricted to report only statistically reliable responses witho... View full abstract»

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  • An algebraic approach to feature interactions

    Publication Year: 1992, Page(s):469 - 484
    Cited by:  Papers (31)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1280 KB)

    The various approaches proposed to provide communication between CAD systems and process planning systems share the major problem that, due to geometric interactions among features, there may be several equally valid sets of manufacturable features describing the same part, and different sets of features may differ in their manufacturability. Thus, to produce a good process plan-or, in some cases,... View full abstract»

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  • Complex autoregressive model for shape recognition

    Publication Year: 1992, Page(s):489 - 496
    Cited by:  Papers (52)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB)

    A complex autoregressive model for invariant feature extraction to recognize arbitrary shapes on a plane is presented. A fast algorithm to calculate complex autoregressive coefficients and complex PARCOR coefficients of the model is also shown. The coefficients are invariant to rotation around the origin and to choice of the starting point in tracing a boundary. It is possible to make them invaria... 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