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Pattern Analysis and Machine Intelligence, IEEE Transactions on

Issue 9 • Date Sep 1991

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Displaying Results 1 - 9 of 9
  • Using motion from orthographic views to verify 3-D point matches

    Publication Year: 1991 , Page(s): 872 - 878
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (556 KB)  

    The specific problem addressed by the authors is how to detect the true match of a fourth point from among candidate matches in a situation in which three points have already been matched. The two sets of points to be matched are both subject to measurement errors. The depth error is more dominant than errors in the other two coordinates; however, the exact statistical distribution of the measurem... View full abstract»

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  • Computation of probabilities for an island-driven parser

    Publication Year: 1991 , Page(s): 936 - 950
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1252 KB)  

    The authors describe an effort to adapt island-driven parsers to handle stochastic context-free grammars. These grammars could be used as language models (LMs) by a language processor (LP) to computer the probability of a linguistic interpretation. As different islands may compete for growth, it is important to compute the probability that an LM generates a sentence containing islands and gaps bet... View full abstract»

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  • Photometric motion

    Publication Year: 1991 , Page(s): 879 - 890
    Cited by:  Papers (13)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1264 KB)  

    The author compares the photometric effects of motion (which is defined as the variation of a point's imaged intensity as a consequence of motion) and the geometric effects of motion (which is defined as the variation in projected surface geometry as a consequence of motion). It is shown that photometric motion provides a cue to surface shape that is potentially as useful as that provided by geome... View full abstract»

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  • The design and use of steerable filters

    Publication Year: 1991 , Page(s): 891 - 906
    Cited by:  Papers (661)  |  Patents (68)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1328 KB)  

    The authors present an efficient architecture to synthesize filters of arbitrary orientations from linear combinations of basis filters, allowing one to adaptively steer a filter to any orientation, and to determine analytically the filter output as a function of orientation. Steerable filters may be designed in quadrature pairs to allow adaptive control over phase as well as orientation. The auth... View full abstract»

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  • Registration of multiple overlapping range images: scenes without distinctive features

    Publication Year: 1991 , Page(s): 857 - 871
    Cited by:  Papers (17)  |  Patents (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1472 KB)  

    A scheme is developed to register range images in an environment where distinctive features are scarce. Another issue addressed here is conflicting situations that may arise from pair-wise registration of multiple overlapping range images whether or not they contain distinctive features. There can be two causes for this: (a) error in individual registrations or (b) compression or bending in range ... View full abstract»

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  • The combinatorics of heuristic search termination for object recognition in cluttered environments

    Publication Year: 1991 , Page(s): 920 - 935
    Cited by:  Papers (22)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1208 KB)  

    Many current recognition systems terminate a search once an interpretation that is good enough is found. The author formally examines the combinatorics of this approach, showing that choosing correct termination procedures can dramatically reduce the search. In particular, the author provides conditions on the object model and the scene clutter such that the expected search is at most quartic. The... View full abstract»

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  • 3-D shape from a shaded and textural surface image

    Publication Year: 1991 , Page(s): 907 - 919
    Cited by:  Papers (9)  |  Patents (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1168 KB)  

    A new 3D texture model is developed by considering the scene image as the superposition of a random texture image on a smooth shaded image. The whole image is analyzed using a patch-by-patch process. Each patch is assumed to be a tilted and slanted texture plane. A modified reflectance map function is applied to describe the deterministic part, and the fractional differencing periodic model is cho... View full abstract»

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  • A default hierarchy for pronouncing English

    Publication Year: 1991 , Page(s): 957 - 964
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (744 KB)  

    The authors study the principles governing the power and efficiency of the default hierarchy, a system of knowledge acquisition and representation. The default hierarchy trains automatically, yet yields a set of rules which can be easily assessed and analyzed. Rules are organized in a hierarchical structure containing general (default) and specific rules. In training the hierarchy, general rules a... View full abstract»

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  • On quantization errors in computer vision

    Publication Year: 1991 , Page(s): 951 - 956
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (476 KB)  

    The author considers the error resulting in the computation of multivariable functions h(X1, X, . . ., Xn), where all the Xis are only available in the quantized form. In image processing and computer vision problems, the variables are typically a mixture of the spatial coordinates and the intensity levels of objects in ... View full abstract»

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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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Editor-in-Chief
David A. Forsyth
University of Illinois