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Pattern Analysis and Machine Intelligence, IEEE Transactions on

Issue 10 • Date Oct 1996

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Displaying Results 1 - 12 of 12
  • Estimating optical flow in segmented images using variable-order parametric models with local deformations

    Publication Year: 1996 , Page(s): 972 - 986
    Cited by:  Papers (74)  |  Patents (5)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (3160 KB)  

    This paper presents a new model for estimating optical flow based on the motion of planar regions plus local deformations. The approach exploits brightness information to organize and constrain the interpretation of the motion by using segmented regions of piecewise smooth brightness to hypothesize planar regions in the scene. Parametric flow models are estimated in these regions in a two step pro... View full abstract»

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  • Decision-theoretic cooperative sensor planning

    Publication Year: 1996 , Page(s): 1013 - 1023
    Cited by:  Papers (30)  |  Patents (1)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1252 KB)  

    This paper describes a decision-theoretic approach to cooperative sensor planning between multiple autonomous vehicles executing a military mission. For this autonomous vehicle application, intelligent cooperative reasoning must be used to select optimal vehicle viewing locations and select optimal camera pan and tilt angles throughout the mission. Decisions are made in such a way as to maximize t... View full abstract»

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  • Image representation using 2D Gabor wavelets

    Publication Year: 1996 , Page(s): 959 - 971
    Cited by:  Papers (317)  |  Patents (5)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1552 KB)  

    This paper extends to two dimensions the frame criterion developed by Daubechies for one-dimensional wavelets, and it computes the frame bounds for the particular case of 2D Gabor wavelets. Completeness criteria for 2D Gabor image representations are important because of their increasing role in many computer vision applications and also in modeling biological vision, since recent neurophysiologic... View full abstract»

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  • HMM based online handwriting recognition

    Publication Year: 1996 , Page(s): 1039 - 1045
    Cited by:  Papers (50)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (792 KB)  

    Hidden Markov model (HMM) based recognition of handwriting is now quite common, but the incorporation of HMM's into a complex stochastic language model for handwriting recognition is still in its infancy. We have taken advantage of developments in the speech processing field to build a more sophisticated handwriting recognition system. The pattern elements of the handwriting model are subcharacter... View full abstract»

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  • A new methodology for gray-scale character segmentation and recognition

    Publication Year: 1996 , Page(s): 1045 - 1050
    Cited by:  Papers (35)  |  Patents (3)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (796 KB)  

    Generally speaking, through the binarization of gray-scale images, useful information for the segmentation of touched or overlapped characters may be lost in many cases. If we analyze gray-scale images, however, specific topographic features and the variation of intensities can be observed in the character boundaries. In this paper, we propose a new methodology for character segmentation and recog... View full abstract»

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  • The slope of a straight line: a phony estimator [plus comments by M. Werman]

    Publication Year: 1996 , Page(s): 1051 - 1052
    Cited by:  Papers (1)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (92 KB)  

    This note discusses an estimator for the slope of a straight line as proposed by Werman and Geyzel (“Fitting a second degree curve in the presence of error”, ibid., vol. 17, no. 2, p. 207-11, 1995). By computing its frequency distribution, the authors demonstrate that the estimator is a unreliable; it possesses neither a first nor a second moment. Application leads therefore to complet... View full abstract»

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  • Face recognition system using local autocorrelations and multiscale integration

    Publication Year: 1996 , Page(s): 1024 - 1028
    Cited by:  Papers (51)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (580 KB)  

    In this paper we investigate the performance of a technique for face recognition based on the computation of 25 local autocorrelation coefficients. We use a large database of 11,600 frontal facial images of 116 persons, organized in training and test sets, for evaluation. Autocorrelation coefficients are computationally inexpensive, inherently shift-invariant and quite robust against changes in fa... View full abstract»

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  • Color in perspective

    Publication Year: 1996 , Page(s): 1034 - 1038
    Cited by:  Papers (86)  |  Patents (10)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (804 KB)  

    Simple constraints on the sets of possible surface reflectance and illuminants are exploited in a new color constancy algorithm that builds upon Forsyth's (1990) theory of color constancy. Forsyth's method invokes the constraint that the surface colors under a canonical illuminant all fall within an established maximal convex gamut of possible colors. However, the method works only when restrictiv... View full abstract»

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  • Wemarks on Strackee's Note [Short Papers]

    Publication Year: 1996
    Request Permissions | Click to expandAbstract | PDF file iconPDF (40 KB)  

    First Page of the Article
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  • Scale-space properties of quadratic feature detectors

    Publication Year: 1996 , Page(s): 987 - 999
    Cited by:  Papers (6)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1380 KB)  

    We consider the scale-space properties of quadratic feature detectors and, in particular, investigate whether, like linear detectors, they permit a scale selection scheme with the “causality property”, which guarantees that features are never created as the scale is coarsened. We concentrate on the design of one dimensional detectors with two constituent filters, with the scale selecti... View full abstract»

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  • Identification of faces in a 2D line drawing projection of a wireframe object

    Publication Year: 1996 , Page(s): 1000 - 1012
    Cited by:  Papers (30)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1340 KB)  

    An important key to reconstructing a three-dimensional object depicted by a two-dimensional line drawing projection is face identification. Identification of edge circuits in a 2D projection corresponding to actual faces of a 3D object becomes complex when the projected object is in wireframe representation. This representation is commonly encountered in drawings made during the conceptual design ... View full abstract»

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  • Analyzing looming motion components from their spatiotemporal spectral signature

    Publication Year: 1996 , Page(s): 1029 - 1033
    Cited by:  Papers (2)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (516 KB)  

    This paper addresses the use of spatio-temporal transform methods applied to the analysis of dynamic image sequences and the characterization of image motion. The image motion including a divergent component (resulting from a looming camera component) is analyzed in the spatio-temporal Mellin transform (MT) domain, resulting in the separation of the spectrum into two parts: a structural term corre... 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