Scheduled System Maintenance
On Friday, October 20, IEEE Xplore will be unavailable from 9:00 PM-midnight ET. We apologize for the inconvenience.
Notice: There is currently an issue with the citation download feature. Learn more.

Proceedings. Fourteenth International Conference on Pattern Recognition (Cat. No.98EX170)

20-20 Aug. 1998

Go

Filter Results

Displaying Results 1 - 25 of 252
  • Proceedings Fourteenth International Conference On Pattern Recognition [front matter]

    Publication Year: 1998, Page(s):i - xxxvi
    Request permission for commercial reuse | PDF file iconPDF (1859 KB)
    Freely Available from IEEE
  • Author index

    Publication Year: 1998, Page(s):xxxvii - xlvii
    Request permission for commercial reuse | PDF file iconPDF (774 KB)
    Freely Available from IEEE
  • Colour based object tracking

    Publication Year: 1998, Page(s):1442 - 1444 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (604 KB)

    A method of detecting and tracking objects using colour is presented. We track objects using a simple colour histogram based technique, which is fast and more robust to occlusion and camera motion than simple "blob" based techniques. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An effective entropic thresholding for ultrasonic images

    Publication Year: 1998, Page(s):1552 - 1554 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (350 KB)

    A new entropy-based thresholding is presented. As a result, a gray level minimizing the difference between the entropy of the object and that of the background will be the desired threshold. Performance of the proposed method has been tested on some ultrasonic images. The results obtained from the method proposed by Kapur et al. (1985) are also given for comparison. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Personal identification based on handwriting

    Publication Year: 1998, Page(s):1761 - 1764 vol.2
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (63 KB)

    Many techniques have been reported for handwriting-based writer identification. Most techniques assume that the written text is fixed (e.g., in signature verification). In this paper we attempt to eliminate this assumption by presenting a novel algorithm for automatic text-independent writer identification. Given that the handwriting of different people can often be visually distinctive, we take a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A system for model-based recognition of articulated objects

    Publication Year: 1998, Page(s):1812 - 1815 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    This paper presents a model-based matching technique for recognition of articulated objects (with two parts) and the poses of these parts in synthetic aperture radar (SAR) images. Using articulation invariants as features, the recognition system first hypothesizes the pose of the larger part and then the pose of the smaller part. Geometric reasoning is carried out to correct identification errors.... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A model-based approach for recognizing folding process of origami

    Publication Year: 1998, Page(s):1808 - 1811 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (180 KB)

    This paper describes an approach for recognition the folding process of origami by interpreting a series of graphics images. Our approach is based on a 3D internal model created during the recognition process. The output of image analysis is matched to a 2D projection of the model such that the contents of folding operations can be identified. The recognized folding operations are used to update t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Robot navigation by combining central and peripheral optical flow detection on a space-variant map

    Publication Year: 1998, Page(s):1804 - 1807 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (120 KB)

    Biological and technical autonomous agents have to achieve basic behaviors of navigation and obstacle avoidance. If they are confined to a monocular visual sensor the optical flow field induced by egomotion can be evaluated in the periphery for speed and direction control, whereas the central flow indicates imminent collisions. We show how a complex-logarithmic mapping of the image is especially a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Comparative evaluation of texture analysis algorithms for defect inspection of textile products

    Publication Year: 1998, Page(s):1738 - 1740 vol.2
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (124 KB)

    Quality control is one of the basic issues in textile industry. Texture analysis plays an important role in the automated visual inspection of texture images to detect their defects. For this purpose, model-based and feature-based methods are implemented and tested for textile images in a laboratory environment. The methods are compared in terms of their success rates in determining the defects View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Memory-based self-localization using omnidirectional images

    Publication Year: 1998, Page(s):1799 - 1803 vol.2
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    This paper proposes a new self-localization method using an omnidirectional image sensor which can observe a surrounding environment with 360-degree of view. The method extracts information which is identical for the position of a sensor and invariant against the rotation of the sensor by generating an autocorrelation image from an observed omnidirectional image. The location of the sensor is esti... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Parallel lowering of digital pictures by topology preserving operations

    Publication Year: 1998, Page(s):1601 - 1603 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (20 KB)

    Lowering operations play a key role when skeletonizing a gray-tone picture. We define ridge points in a 3×3 neighborhood, and discuss the computational advantage obtained when lowering is accomplished by parallel operations based on a non-ridge point condition rather than on a simple point condition. Two parallel algorithms are given, respectively characterized by four subiterations and two ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A new fuzzy geometric representation for online isolated character recognition

    Publication Year: 1998, Page(s):1121 - 1123 vol.2
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (92 KB)

    Introduces a fuzzy representation for isolated character description. This representation maps a character from its original sequence of 2D coordinates into a fuzzy vector space that can thereafter serve as input to any artificial neural network classifier. Recognition experiments on isolated digits extracted from the UNIPEN database are their conducted to evaluate the performances of the proposed... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis of volumetric images of filamentous bacteria in industrial sludge

    Publication Year: 1998, Page(s):1735 - 1737 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    This article describes the application of image analysis in evaluation of filamentous bacteria in industrial sludge bulking which may be useful in environmental pollution control. The volumetric images are obtained from confocal microscope. Many conventional and heuristic methods are conveniently used to reduce the noise and enhance the object features. Moreover, it has been shown that the segment... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Representing environment through target-guided navigation

    Publication Year: 1998, Page(s):1794 - 1798 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    Proposes an environmental representation, called a T-Net, a network of the path segments which reflects the structure of the environment. The robot iterates panoramic-sensing to find and estimate the skeletons of local areas, as well as their spatial relationships, through active navigation guided by selected targets. The robot represents the environment by a network of the skeletons which are use... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Segmentation of urban scenes from aerial stereo imagery

    Publication Year: 1998, Page(s):1405 - 1407 vol.2
    Cited by:  Papers (1)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (156 KB)

    Presents a focusing strategy for the 3-D reconstruction of urban scenes from aerial stereo pairs. It consists in segmenting the scene into above-ground objects (buildings or vegetation), and it relies on 3-D and radiometric analyses. The classification is able to cope with extended above-ground, adjacent objects, slopes, and it is robust to image and scene variability View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Interactive manipulation through augmented virtuality using processed video contents

    Publication Year: 1998, Page(s):1219 - 1222 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    Describes an interactive manipulation technique for objects in video images extracted by an efficient algorithm. An object contained in a video image has to be able to be extracted at a reasonable speed and a moving object is able to be tracked within a sufficient accuracy. Moreover, any interaction method for real objects with such functions has to be established using a technique for manipulatin... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the maximum likelihood potential estimates for Gibbs random field image models

    Publication Year: 1998, Page(s):1598 - 1600 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (164 KB)

    Two MLEs of Gibbs potentials in Gibbs random field image models with translation invariant pixel interactions are discussed. The unconditional MLE presents the potentials in an implicit form of a system of stochastic equations to be solved by analytic and stochastic approximation. The conditional MLE, provided a training sample holds the least upper bound (top rank) in the Gibbs energy within the ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Character recognition in bookshelf images by automatic template selection

    Publication Year: 1998, Page(s):1117 - 1120 vol.2
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (124 KB)

    Presents a multiple-dictionary method for recognizing low-quality characters in scene images. First, the environmental conditions of an input image are estimated using an initial dictionary. Then, a relevant dictionary from multiple dictionaries reflecting different environmental conditions is automatically selected from the estimation and used for recognition. Experiments are made for characters ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fuzzy shape recognition for robot repositioning

    Publication Year: 1998, Page(s):1715 - 1717 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    We address the problem of shape recognition in the context of autonomous navigation of mobile robots. We present an association procedure which is able to establish the correspondence between elements of a learned fuzzy internal representation of the environment and currently perceived objects. Using this procedure, a mobile robot is able to periodically decrease the uncertainty affecting its posi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Tablet quality assurance in real time

    Publication Year: 1998, Page(s):1731 - 1734 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (688 KB)

    A machine vision system for high speed inspection of light sensitive tablets is presented. The described system uses time delay and integration (TDI) cameras in an industrial application. All computer vision algorithms are implemented on a specially designed multiprocessor system. A pass or fail signal will be generated online. We propose design considerations as well as the resulting algorithms. ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Intensity modulated moire and its intensity-phase analysis

    Publication Year: 1998, Page(s):1791 - 1793 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    Moire topography has the advantage that it just requires a single image, but it cannot discern the fringe order. So, it is difficult to discern the connection among fringes in the case where the fringe orders are not continuous. In our work, an intensity modulated moire is presented. By modulating the transmission of projection and observation grating, the moire pattern whose fringe intensity chan... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Terrain reconstruction with an adaptive surface mesh

    Publication Year: 1998, Page(s):1401 - 1404 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (724 KB)

    Describes a new class of adaptive mesh surface for terrain analysis. The novelty of the contribution resides in the control of the mesh. We use a variance-bias criterion to select the optimal areas for the triangular facets of the mesh. In this way the mesh adapts itself to offer the best tradeoff between increasing the facet area to minimise the noise variance and decreasing the facet area to min... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Helping computer vision by verbal and nonverbal communication

    Publication Year: 1998, Page(s):1216 - 1218 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (132 KB)

    Proposes a method of removing ambiguities in robot tasks by a multimodal human-robot interface consisting of verbal and nonverbal communication. Such ambiguities often arise from failures of the robot vision system. However, it is not easy to solve this problem only by improving computer vision techniques. Thus, our robot asks a human such a question that a natural reply to it will contain helpful... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Maximum likelihood estimation of Toeplitz-block-Toeplitz covariances in the presence of subspace interference

    Publication Year: 1998, Page(s):1595 - 1597 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (60 KB)

    The EM algorithm is a commonly cited solution in the literature for the problem of maximum likelihood estimation of covariance matrices under a Toeplitz constraint. In this paper, the solution is extended to the case of two-dimensional signals, where spatial stationarity enforces a Toeplitz-block-Toeplitz structure on the covariance matrix. A further generalisation which is presented involves the ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An algorithm for constructing a multi-template dictionary for character recognition considering distribution of feature vectors

    Publication Year: 1998, Page(s):1114 - 1116 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (72 KB)

    An algorithm to construct a multi-template dictionary for character recognition is presented. It is a repetitive process of partitioning and estimating the distribution by observing both within-class distribution and between-class information. The effectiveness of the algorithm is shown by experimental results View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.